20921908 (number)

20921908 is an even 8-digits composite number following 20921907 and preceding 20921909. In scientific notation, it is written as 2.0921908 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 24 positive divisors. There are 8757504 positive integers (up to 20921908) that are relatively prime to 20921908.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0921908 × 10^7
Engineering notation 2.0921908 × 10^6

Prime Factorization of 20921908

Prime Factorization 2 × 2 × 7 × 43 × 17377

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10460954
Product of the distinct prime numbers

The prime factorization of 20921908 is 2 × 2 × 7 × 43 × 17377. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 9, 25, 1, 402, 460, 7614, 7464, 41173, 37861, 49323, 654538, 3565578, 8126025, 23809207, 75851618, 105934590, 961284560, 7982132763, 714898959

Basic calculations (n = 20921908)

Multiplication

n×y
n×2 41843816
n×3 62765724
n×4 83687632
n×5 104609540

Division

n÷y
n÷2 10460954
n÷3 6973969.3333333
n÷3 5230477
n÷5 4184381.6

Exponentiation

ny
n2 437726234360464
n3 9.1580680044761E+21
n4 1.9160425624739E+29
n5 4.0087266216164E+36

Nth Root

y√n
2√n 4574.047223193
3√n 275.55000887301
4√n 67.631702796788
5√n 29.115232170607

Divisors of 20921908

1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17377, 34754, 69508, 121639, 243278, 486556, 747211, 1494422, 2988844, 5230477, 10460954, 20921908

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20921907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20921908 can be divided by 24 positive divisors. The sum of these divisors (counting 20921908) is 1, the average is 0.041666666666667.

Base conversion 20921908

Base System Value
2 Binary 1001111110011111000110100
3 Ternary 1110100221110111
4 Quaternary 1033303320310
5 Quinary 20324000113
6 Senary 2024232404
8 Octal 117637064
10 Decimal 20921908
12 Duodecimal 700b704
16 Hexadecimal 13f3e34
20 Vigesimal 6af4f8
36 Base36 cgfg4

Cryptographic Hash Functions

md5 8b91dd40307068901aff69a98ab735c3
sha1 bd34ea6135c95bb2fbe5653ed4a78524c0a2b9dd
sha256 4aa860602b5e58415a79fd265c1efdcd38c680f6c7294725e5e54f6e634eb98e
sha512 199a85deb8724b7b4394f2175067225353f3f76063dc7e2c2ab1bafbbb826dd56d9f21ff908444d8ffccc0155e3cefec8db29305bab671c36779e3bb70974394
ripemd-160 218f450b7571ecbef43c92352ca29bbb56535e8c

20921908 as geometric shapes

Circle

Radius = n
Diameter 41843816
Circumference 131456224.94376
Area 1.3751575221504E+15

Sphere

Radius = n
Volume 3.8361225551917E+22
Surface area 5.5006300886014E+15
Circumference 131456224.94376

Square

Length = n
Perimeter 83687632
Area 437726234360464
Diagonal 29588046.044322

Cube

Length = n
Surface area 2626357406162784
Volume 9.1580680044761E+21
Space diagonal 36237807.647282

Equilateral Triangle

Length = n
Perimeter 62765724
Area 1.8954101942953E+14
Altitude 18118903.823641

Triangular Pyramid

Length = n
Surface area 1.8954101942953E+14
Volume 1.0792886647554E+21
Height 9862682.0147741