20921428 (number)
20921428 is an even 8-digits composite number following 20921427 and preceding 20921429. In scientific notation, it is written as 2.0921428 × 10^7. The sum of its digits is 28. It has a total of 6 prime factors and 48 positive divisors. There are 9072000 positive integers (up to 20921428) that are relatively prime to 20921428.
Interesting facts
- 20921428 has 48 divisors, whose sum is 41827968
- The reverse of 20921428 is 82412902
- Previous prime number is 181
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 28
- Digital Root 1
Name
Name | twenty million nine hundred twenty-one thousand four hundred twenty-eight |
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Notation
Scientific notation | 2.0921428 × 10^7 |
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Engineering notation | 2.0921428 × 10^6 |
Prime Factorization of 20921428
Prime Factorization 2 × 2 × 11 × 71 × 181 × 37
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 10460714 | Product of the distinct prime numbers |
The prime factorization of 20921428 is 2 × 2 × 11 × 71 × 181 × 37. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 20921428)
Multiplication
n×yn×2 | 41842856 |
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n×3 | 62764284 |
n×4 | 83685712 |
n×5 | 104607140 |
Division
n÷yn÷2 | 10460714 |
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n÷3 | 6973809.3333333 |
n÷3 | 5230357 |
n÷5 | 4184285.6 |
Exponentiation
nyn2 | 437706149559184 |
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n3 | 9.1574376931597E+21 |
n4 | 1.9158667336193E+29 |
n5 | 4.0082667925011E+36 |
Nth Root
y√n2√n | 4573.9947529485 |
---|---|
3√n | 275.54790159204 |
4√n | 67.631314884072 |
5√n | 29.115098574381 |
Divisors of 20921428
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 | -20921427 | 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 20921428 can be divided by 48 positive divisors. The sum of these divisors (counting 20921428) is 1, the average is 0.020833333333333.
Base conversion 20921428
Base | System | Value |
---|---|---|
2 | Binary | 1001111110011110001010100 |
3 | Ternary | 1110100220210201 |
4 | Quaternary | 1033303301110 |
5 | Quinary | 20323441203 |
6 | Senary | 2024230244 |
8 | Octal | 117636124 |
10 | Decimal | 20921428 |
12 | Duodecimal | 700b384 |
16 | Hexadecimal | 13f3c54 |
20 | Vigesimal | 6af3b8 |
36 | Base36 | cgf2s |
Cryptographic Hash Functions
md5 | 27e82defd2df512c9af5bc511b69bad3 |
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sha1 | 3589bb3649ecf29fdab4dbf5e73750feb5cc8a22 |
sha256 | d260175e97bef84db630e7027760579ccb204f1fe48c10206d0f35cab58ca824 |
sha512 | 7271e2ad5f853f9efc7cae7ed3312a0332eb790afa5c4894082566fbb0d658a1039f6f971e947d6766cdc48abc1260b66c4e00650154f39c8f796782fab81e75 |
ripemd-160 | 971ae34896d80d77d0126d4a83a0c2b8f8e19160 |
20921428 as geometric shapes
Circle
Radius = nDiameter | 41842856 |
---|---|
Circumference | 131453209.01482 |
Area | 1.3750944238862E+15 |
Sphere
Radius = nVolume | 3.8358585310049E+22 |
---|---|
Surface area | 5.5003776955448E+15 |
Circumference | 131453209.01482 |
Square
Length = nPerimeter | 83685712 |
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Area | 437706149559184 |
Diagonal | 29587367.221812 |
Cube
Length = nSurface area | 2626236897355104 |
---|---|
Volume | 9.1574376931597E+21 |
Space diagonal | 36236976.262894 |
Equilateral Triangle
Length = nPerimeter | 62764284 |
---|---|
Area | 1.8953232245546E+14 |
Altitude | 18118488.131447 |
Triangular Pyramid
Length = nSurface area | 1.8953232245546E+14 |
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Volume | 1.0792143818544E+21 |
Height | 9862455.7406041 |