36991 (number)
36,991 (thirtysix thousand nine hundred ninetyone) is an odd fivedigits composite number following 36990 and preceding 36992. In scientific notation, it is written as 3.6991 × 10^{4}. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 36,400 positive integers (up to 36991) that are relatively prime to 36991.
Basic properties
 Is Prime? No
 Number parity Odd
 Number length 5
 Sum of Digits 28
 Digital Root 1
Name
Short name  36 thousand 991 

Full name  thirtysix thousand nine hundred ninetyone 
Notation
Scientific notation  3.6991 × 10^{4} 

Engineering notation  36.991 × 10^{3} 
Prime Factorization of 36991
Prime Factorization 71 × 521
Composite numberω(n)  Distinct Factors  2  Total number of distinct prime factors 

Ω(n)  Total Factors  2  Total number of prime factors 
rad(n)  Radical  36991  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 36,991 is 71 × 521. Since it has a total of 2 prime factors, 36,991 is a composite number.
Divisors of 36991
4 divisors
τ(n)  Total Divisors  4  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  37584  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  593  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  9396  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  192.33044480789  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  3.9368880374627  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 36,991 can be divided by 4 positive divisors (out of which 0 are even, and 4 are odd). The sum of these divisors (counting 36,991) is 37,584, the average is 9,396.
Other Arithmetic Functions (n = 36991)
φ(n)  Euler Totient  36400  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  3640  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 3917  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 36,400 positive integers (less than 36,991) that are coprime with 36,991. And there are approximately 3,917 prime numbers less than or equal to 36,991.
Divisibility of 36991
m  2  3  4  5  6  7  8  9 

n mod m  1  1  3  1  1  3  7  1 
36,991 is not divisible by any number less than or equal to 9.
Classification of 36991
By Arithmetic functions
 Arithmetic
 Semiprime
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Other numbers
 LucasCarmichael
Base conversion (36991)
Base  System  Value 

2  Binary  1001000001111111 
3  Ternary  1212202001 
4  Quaternary  21001333 
5  Quinary  2140431 
6  Senary  443131 
8  Octal  110177 
10  Decimal  36991 
12  Duodecimal  194a7 
16  Hexadecimal  907f 
20  Vigesimal  4c9b 
36  Base36  sjj 
Basic calculations (n = 36991)
Multiplication
n×yn×2  73982 

n×3  110973 
n×4  147964 
n×5  184955 
Division
n÷yn÷2  18495.500 

n÷3  12330.333 
n÷4  9247.750 
n÷5  7398.200 
Exponentiation
n^{y}n^{2}  1368334081 

n^{3}  50616045990271 
n^{4}  1872338157226114561 
n^{5}  69259660773951203725951 
Nth Root
^{y}√n^{2}√n  192.33044480789 

^{3}√n  33.319516495864 
^{4}√n  13.868325234429 
^{5}√n  8.1963258251975 
36991 as geometric shapes
Circle
Radius = nDiameter  73982 

Circumference  232421.30769788 
Area  4298748296.5261 
Sphere
Radius = nVolume  2.1201999764906E+14 

Surface area  17194993186.105 
Circumference  232421.30769788 
Square
Length = nPerimeter  147964 

Area  1368334081 
Diagonal  52313.173885743 
Cube
Length = nSurface area  8210004486 

Volume  50616045990271 
Space diagonal  64070.29142278 
Equilateral Triangle
Length = nPerimeter  110973 

Area  592506037.50502 
Altitude  32035.14571139 
Triangular Pyramid
Length = nSurface area  2370024150.0201 

Volume  5965158226095.1 
Height  30203.025025098 
Cryptographic Hash Functions
md5  6f2fda2e822df3f025822264e1d01e77 

sha1  2ecea0484ef2d0d562507dbc8b0ad4139d182333 
sha256  d963cff227443439e42450b4b0b00a632b71e2ed4eca21532fda7d8922be38c0 
sha512  e5be722481fbf18a6911a3f3572942a415a77b4292e74a0880a1cfd92b91558a00a38d10ce7b3cc046a80458abdb2d797d85448a8ecb88508e6b43e62aa73693 
ripemd160  fb9c6692c86977fce758fd9e88a5269dcc3ed172 