21813908 (number)

21813908 is an even 8-digits composite number following 21813907 and preceding 21813909. In scientific notation, it is written as 2.1813908 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 12 positive divisors. There are 10863000 positive integers (up to 21813908) that are relatively prime to 21813908.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1813908 × 10^7
Engineering notation 2.1813908 × 10^6

Prime Factorization of 21813908

Prime Factorization 2 × 2 × 251 × 21727

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10906954
Product of the distinct prime numbers

The prime factorization of 21813908 is 2 × 2 × 251 × 21727. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 10, 4, 94, 500, 174, 3391, 3392, 44367, 95885, 205803, 700433, 3631344, 1035104, 71949405, 35761433, 503603603, 278674919, 5820735226, 329348272

Basic calculations (n = 21813908)

Multiplication

n×y
n×2 43627816
n×3 65441724
n×4 87255632
n×5 109069540

Division

n÷y
n÷2 10906954
n÷3 7271302.6666667
n÷3 5453477
n÷5 4362781.6

Exponentiation

ny
n2 475846582232464
n3 1.0380073566933E+22
n4 2.2642996982232E+29
n5 4.9393225301468E+36

Nth Root

y√n
2√n 4670.536157659
3√n 279.41163869768
4√n 68.341321011954
5√n 29.359367517576

Divisors of 21813908

1, 2, 4, 251, 502, 1004, 21727, 43454, 86908, 5453477, 10906954, 21813908

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 -21813907
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 21813908 can be divided by 12 positive divisors. The sum of these divisors (counting 21813908) is 1, the average is 0.083333333333333.

Base conversion 21813908

Base System Value
2 Binary 1010011001101101010010100
3 Ternary 1112001021001112
4 Quaternary 1103031222110
5 Quinary 21041021113
6 Senary 2055314152
8 Octal 123155224
10 Decimal 21813908
12 Duodecimal 737b958
16 Hexadecimal 14cda94
20 Vigesimal 6g6ef8
36 Base36 czjpw

Cryptographic Hash Functions

md5 4c2787ab0012dbb1f8b925df6db4d3b7
sha1 a2fc421bb75118cce831e4e86bd0a5cadef227ba
sha256 c141aa8b65cdad27a966f216a1ad625a4b82a4e04bf55f58260b323e61e2f29c
sha512 c59be08c025c656afd01830f18051e2e98353a9e35ecbdf14fbd67461e17e2affd18147ff466e981e7af8ec6cd0656f563755e8638f8379fbb313f8bc15a010b
ripemd-160 c97607e26c366863b34a4a34d28e69707bf04da9

21813908 as geometric shapes

Circle

Radius = n
Diameter 43627816
Circumference 137060826.23777
Area 1.4949161269773E+15

Sphere

Radius = n
Volume 4.3479950482133E+22
Surface area 5.9796645079093E+15
Circumference 137060826.23777

Square

Length = n
Perimeter 87255632
Area 475846582232464
Diagonal 30849524.541959

Cube

Length = n
Surface area 2855079493394784
Volume 1.0380073566933E+22
Space diagonal 37782796.967633

Equilateral Triangle

Length = n
Perimeter 65441724
Area 2.0604761425866E+14
Altitude 18891398.483817

Triangular Pyramid

Length = n
Surface area 2.0604761425866E+14
Volume 1.223303401399E+21
Height 10283174.84732