20921904 (number)

20921904 is an even 8-digits composite number following 20921903 and preceding 20921905. In scientific notation, it is written as 2.0921904 × 10^7. The sum of its digits is 27. It has a total of 7 prime factors and 40 positive divisors. There are 6669696 positive integers (up to 20921904) that are relatively prime to 20921904.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0921904 × 10^7
Engineering notation 2.0921904 × 10^6

Prime Factorization of 20921904

Prime Factorization 2 × 2 × 2 × 2 × 9 × 23 × 6317

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2615238
Product of the distinct prime numbers

The prime factorization of 20921904 is 2 × 2 × 2 × 2 × 9 × 23 × 6317. Since it has a total of 7 prime factors.

Most popular turbo-numbers

7, 10, 51, 66, 716, 440, 6559, 9025, 28055, 55920, 272887, 122075, 4793870, 1627957, 29510063, 24710569, 127430826, 98368168, 1476510137, 5386178455

Basic calculations (n = 20921904)

Multiplication

n×y
n×2 41843808
n×3 62765712
n×4 83687616
n×5 104609520

Division

n÷y
n÷2 10460952
n÷3 6973968
n÷3 5230476
n÷5 4184380.8

Exponentiation

ny
n2 437726066985216
n3 9.1580627517623E+21
n4 1.9160410971835E+29
n5 4.0087227895327E+36

Nth Root

y√n
2√n 4574.0467859435
3√n 275.54999131247
4√n 67.631699564209
5√n 29.115231057315

Divisors of 20921904

1, 2, 4, 8, 9, 16, 18, 23, 36, 46, 72, 92, 144, 184, 207, 368, 414, 828, 1656, 3312, 6317, 12634, 25268, 50536, 56853, 101072, 113706, 145291, 227412, 290582, 454824, 581164, 909648, 1162328, 1307619, 2324656, 2615238, 5230476, 10460952, 20921904

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20921903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20921904 can be divided by 40 positive divisors. The sum of these divisors (counting 20921904) is 1, the average is 0.025.

Base conversion 20921904

Base System Value
2 Binary 1001111110011111000110000
3 Ternary 1110100221110100
4 Quaternary 1033303320300
5 Quinary 20324000104
6 Senary 2024232400
8 Octal 117637060
10 Decimal 20921904
12 Duodecimal 700b700
16 Hexadecimal 13f3e30
20 Vigesimal 6af4f4
36 Base36 cgfg0

Cryptographic Hash Functions

md5 c60588e7d2e4d4fbb9d00792af41729b
sha1 3bb7b0fe9c793e5c54fd8aac0076eec24878f20f
sha256 9decf93d69726eed4b147b9442728f5b8641c8336ec920797d117e4bc8821e75
sha512 765d09401d7a158e795f692ed5c5d70b17b26d84679cfbdd196792d18dfaaeb53645df5bcad554b474b9f6fc9594078d419345ca54648dcc5f3f94dc95121836
ripemd-160 faaa51150a859b23bb69f7c9a4e18f5f3b93909b

20921904 as geometric shapes

Circle

Radius = n
Diameter 41843808
Circumference 131456199.81102
Area 1.3751569963255E+15

Sphere

Radius = n
Volume 3.8361203549401E+22
Surface area 5.500627985302E+15
Circumference 131456199.81102

Square

Length = n
Perimeter 83687616
Area 437726066985216
Diagonal 29588040.387468

Cube

Length = n
Surface area 2626356401911296
Volume 9.1580627517623E+21
Space diagonal 36237800.719079

Equilateral Triangle

Length = n
Perimeter 62765712
Area 1.8954094695392E+14
Altitude 18118900.359539

Triangular Pyramid

Length = n
Surface area 1.8954094695392E+14
Volume 1.0792880457172E+21
Height 9862680.129156