20921820 (number)
20921820 is an even 8-digits composite number following 20921819 and preceding 20921821. In scientific notation, it is written as 2.0921820 × 10^7. The sum of its digits is 24. It has a total of 6 prime factors and 48 positive divisors. There are 5541120 positive integers (up to 20921820) that are relatively prime to 20921820.
Interesting facts
- 20921820 has 48 divisors, whose sum is 58980768
- The reverse of 20921820 is 02812902
- Previous prime number is 157
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 24
- Digital Root 6
Name
Name | twenty million nine hundred twenty-one thousand eight hundred twenty |
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Notation
Scientific notation | 2.0921820 × 10^7 |
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Engineering notation | 2.0921820 × 10^6 |
Prime Factorization of 20921820
Prime Factorization 2 × 2 × 3 × 5 × 157 × 2221
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 10460910 | Product of the distinct prime numbers |
The prime factorization of 20921820 is 2 × 2 × 3 × 5 × 157 × 2221. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 20921820)
Multiplication
n×yn×2 | 41843640 |
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n×3 | 62765460 |
n×4 | 83687280 |
n×5 | 104609100 |
Division
n÷yn÷2 | 10460910 |
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n÷3 | 6973940 |
n÷3 | 5230455 |
n÷5 | 4184364 |
Exponentiation
nyn2 | 437722552112400 |
---|---|
n3 | 9.1579524452363E+21 |
n4 | 1.9160103262779E+29 |
n5 | 4.0086423164528E+36 |
Nth Root
y√n2√n | 4574.0376036933 |
---|---|
3√n | 275.54962254058 |
4√n | 67.631631679956 |
5√n | 29.115207678149 |
Divisors of 20921820
48 divisors
τ | Total Divisors | 48 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -20921819 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.020833333333333 | 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 | 48 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 20921820 can be divided by 48 positive divisors. The sum of these divisors (counting 20921820) is 1, the average is 0.020833333333333.
Base conversion 20921820
Base | System | Value |
---|---|---|
2 | Binary | 1001111110011110111011100 |
3 | Ternary | 1110100221100020 |
4 | Quaternary | 1033303313130 |
5 | Quinary | 20323444240 |
6 | Senary | 2024232140 |
8 | Octal | 117636734 |
10 | Decimal | 20921820 |
12 | Duodecimal | 700b650 |
16 | Hexadecimal | 13f3ddc |
20 | Vigesimal | 6af4b0 |
36 | Base36 | cgfdo |
Cryptographic Hash Functions
md5 | 7101d507c8c3df5ad742fb064109b0f4 |
---|---|
sha1 | 49ae1c55eefd53153c8796b0a9d37c5d954082f7 |
sha256 | f7d38e5c517d1cf712d9c03cbbd6ecfadaffd22d7507b36d4aa592b2ec47b26d |
sha512 | e90d603c066b85bf4f532155ad7a25b692111d2cfda5a58efc9603843d6b370c37b9a346adcac2e9986cb86cd1b578cd39b4af4e3ba59d3f774ea352dc4f4b60 |
ripemd-160 | 1ea1ddb94cf21ab3d8e969e8aaac42cf96b1d66b |
20921820 as geometric shapes
Circle
Radius = nDiameter | 41843640 |
---|---|
Circumference | 131455672.02346 |
Area | 1.3751459540269E+15 |
Sphere
Radius = nVolume | 3.8360741498505E+22 |
---|---|
Surface area | 5.5005838161076E+15 |
Circumference | 131455672.02346 |
Square
Length = nPerimeter | 83687280 |
---|---|
Area | 437722552112400 |
Diagonal | 29587921.593529 |
Cube
Length = nSurface area | 2626335312674400 |
---|---|
Volume | 9.1579524452363E+21 |
Space diagonal | 36237655.226811 |
Equilateral Triangle
Length = nPerimeter | 62765460 |
---|---|
Area | 1.8953942496935E+14 |
Altitude | 18118827.613405 |
Triangular Pyramid
Length = nSurface area | 1.8953942496935E+14 |
---|---|
Volume | 1.0792750459684E+21 |
Height | 9862640.5311762 |