21001908 (number)

21001908 is an even 8-digits composite number following 21001907 and preceding 21001909. In scientific notation, it is written as 2.1001908 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 12 positive divisors. There are 7000632 positive integers (up to 21001908) that are relatively prime to 21001908.

Interesting facts

Basic properties

Name

Name twenty-one million one thousand nine hundred eight

Notation

Scientific notation 2.1001908 × 10^7
Engineering notation 2.1001908 × 10^6

Prime Factorization of 21001908

Prime Factorization 2 × 2 × 3 × 1750159

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10500954
Product of the distinct prime numbers

The prime factorization of 21001908 is 2 × 2 × 3 × 1750159. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 7, 36, 39, 127, 619, 8740, 9619, 65120, 5938, 191545, 591287, 1203177, 1408037, 16169289, 69885021, 779567533, 431158634, 498606025, 945476398

Basic calculations (n = 21001908)

Multiplication

n×y
n×2 42003816
n×3 63005724
n×4 84007632
n×5 105009540

Division

n÷y
n÷2 10500954
n÷3 7000636
n÷3 5250477
n÷5 4200381.6

Exponentiation

ny
n2 441080139640464
n3 9.2635245133562E+21
n4 1.9455168958525E+29
n5 4.085956685914E+36

Nth Root

y√n
2√n 4582.7838700947
3√n 275.900772984
4√n 67.696261862046
5√n 29.137464026247

Divisors of 21001908

1, 2, 3, 4, 6, 12, 1750159, 3500318, 5250477, 7000636, 10500954, 21001908

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 -21001907
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 21001908 can be divided by 12 positive divisors. The sum of these divisors (counting 21001908) is 1, the average is 0.083333333333333.

Base conversion 21001908

Base System Value
2 Binary 1010000000111011010110100
3 Ternary 1110112000012110
4 Quaternary 1100013122310
5 Quinary 20334030113
6 Senary 2030051020
8 Octal 120073264
10 Decimal 21001908
12 Duodecimal 7049a70
16 Hexadecimal 14076b4
20 Vigesimal 6b54f8
36 Base36 ci56c

Cryptographic Hash Functions

md5 ddd39f38b38f0545b30a3daf62089653
sha1 01a2a0cf7159b43c6d06bff2584f326924f464c0
sha256 23ea3ba9c0d09cedaff12cdda06f9fb942987a66ab79ba44605456a5f1bda1ac
sha512 29549daf18e7cf55eeb723cfa9cc08c26a94be1aaca2a1fa2be8f9ba2dcd6d3ef828ebdf8922f535acf67d60397e3f71ce06dc1bfa341066d618a12df7ac9e00
ripemd-160 ca9b665caae21a2cf5f47ce1921f9fc842a70df2

21001908 as geometric shapes

Circle

Radius = n
Diameter 42003816
Circumference 131958879.76834
Area 1.3856941263388E+15

Sphere

Radius = n
Volume 3.8802960743345E+22
Surface area 5.5427765053554E+15
Circumference 131958879.76834

Square

Length = n
Perimeter 84007632
Area 441080139640464
Diagonal 29701183.129312

Cube

Length = n
Surface area 2646480837842784
Volume 9.2635245133562E+21
Space diagonal 36376371.711887

Equilateral Triangle

Length = n
Perimeter 63005724
Area 1.9099330301671E+14
Altitude 18188185.855944

Triangular Pyramid

Length = n
Surface area 1.9099330301671E+14
Volume 1.0917168335137E+21
Height 9900394.3764373