21131908 (number)

21131908 is an even 8-digits composite number following 21131907 and preceding 21131909. In scientific notation, it is written as 2.1131908 × 10^7. The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors. There are 9056520 positive integers (up to 21131908) that are relatively prime to 21131908.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred thirty-one thousand nine hundred eight

Notation

Scientific notation 2.1131908 × 10^7
Engineering notation 2.1131908 × 10^6

Prime Factorization of 21131908

Prime Factorization 2 × 2 × 7 × 754711

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10565954
Product of the distinct prime numbers

The prime factorization of 21131908 is 2 × 2 × 7 × 754711. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 9, 56, 26, 885, 431, 8134, 9900, 35141, 79302, 770982, 993494, 9099995, 8038003, 59423569, 61299098, 480882988, 561247242, 6699926391, 2982342788

Basic calculations (n = 21131908)

Multiplication

n×y
n×2 42263816
n×3 63395724
n×4 84527632
n×5 105659540

Division

n÷y
n÷2 10565954
n÷3 7043969.3333333
n÷3 5282977
n÷5 4226381.6

Exponentiation

ny
n2 446557535720464
n3 9.4366127615516E+21
n4 1.9941363270873E+29
n5 4.2139905403467E+36

Nth Root

y√n
2√n 4596.945507617
3√n 276.46886976803
4√n 67.800778075307
5√n 29.173446722377

Divisors of 21131908

1, 2, 4, 7, 14, 28, 754711, 1509422, 3018844, 5282977, 10565954, 21131908

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21131907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21131908 can be divided by 12 positive divisors. The sum of these divisors (counting 21131908) is 1, the average is 0.083333333333333.

Base conversion 21131908

Base System Value
2 Binary 1010000100111001010000100
3 Ternary 1110202121112021
4 Quaternary 1100213022010
5 Quinary 20402210113
6 Senary 2032532524
8 Octal 120471204
10 Decimal 21131908
12 Duodecimal 70b1144
16 Hexadecimal 1427284
20 Vigesimal 6c19f8
36 Base36 ckxhg

Cryptographic Hash Functions

md5 7f5aba66acb0776c691c2b6cb807925f
sha1 b019477b462dbcaecc4838d1968e22435fb5ce51
sha256 aaee1c3539d4852388ccb964445389e3e629d3f68c40008145fd56de18b6af51
sha512 12a6eb224fc24f5d8c477552431ded28ea3006fdc744ba4e74e76a502f47d561598c25aaaff9d9c0832a35c1de7ee2889d8e1bdc853f3b3e690f2903ec8eb834
ripemd-160 84754daaa8434a4be16c0bf630d8e95843b74ebb

21131908 as geometric shapes

Circle

Radius = n
Diameter 42263816
Circumference 132775693.85827
Area 1.4029018736246E+15

Sphere

Radius = n
Volume 3.9527991101949E+22
Surface area 5.6116074944983E+15
Circumference 132775693.85827

Square

Length = n
Perimeter 84527632
Area 446557535720464
Diagonal 29885030.892421

Cube

Length = n
Surface area 2679345214322784
Volume 9.4366127615516E+21
Space diagonal 36601538.316871

Equilateral Triangle

Length = n
Perimeter 63395724
Area 1.9336508509265E+14
Altitude 18300769.158436

Triangular Pyramid

Length = n
Surface area 1.9336508509265E+14
Volume 1.1121154791874E+21
Height 9961676.9641402