20809728 (number)
20809728 is an even 8-digits composite number following 20809727 and preceding 20809729. In scientific notation, it is written as 2.0809728 × 10^7. The sum of its digits is 36. It has a total of 13 prime factors and 48 positive divisors. There are 6930432 positive integers (up to 20809728) that are relatively prime to 20809728.
Interesting facts
- 20809728 has 48 divisors, whose sum is 46273500
- The reverse of 20809728 is 82790802
- Previous prime number is 9
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 36
- Digital Root 9
Name
Name | twenty million eight hundred nine thousand seven hundred twenty-eight |
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Notation
Scientific notation | 2.0809728 × 10^7 |
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Engineering notation | 2.0809728 × 10^6 |
Prime Factorization of 20809728
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 9 × 1129
Composite numberω | Distinct Factors | 3 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 13 | Total number of prime factors |
rad | Radical | 20322 | Product of the distinct prime numbers |
The prime factorization of 20809728 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 9 × 1129. Since it has a total of 13 prime factors.
Most popular turbo-numbers
Basic calculations (n = 20809728)
Multiplication
n×yn×2 | 41619456 |
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n×3 | 62429184 |
n×4 | 83238912 |
n×5 | 104048640 |
Division
n÷yn÷2 | 10404864 |
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n÷3 | 6936576 |
n÷3 | 5202432 |
n÷5 | 4161945.6 |
Exponentiation
nyn2 | 433044779433984 |
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n3 | 9.0115440718412E+21 |
n4 | 1.8752778099503E+29 |
n5 | 3.9024021149501E+36 |
Nth Root
y√n2√n | 4561.7680782784 |
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3√n | 275.05664067474 |
4√n | 67.540862285571 |
5√n | 29.083942726135 |
Divisors of 20809728
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 | -20809727 | 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 20809728 can be divided by 48 positive divisors. The sum of these divisors (counting 20809728) is 1, the average is 0.020833333333333.
Base conversion 20809728
Base | System | Value |
---|---|---|
2 | Binary | 1001111011000100000000000 |
3 | Ternary | 1110011020120200 |
4 | Quaternary | 1033120200000 |
5 | Quinary | 20311402403 |
6 | Senary | 2022005200 |
8 | Octal | 117304000 |
10 | Decimal | 20809728 |
12 | Duodecimal | 6b76800 |
16 | Hexadecimal | 13d8800 |
20 | Vigesimal | 6a1468 |
36 | Base36 | ce0w0 |
Cryptographic Hash Functions
md5 | 9b12176bd79ce7f7fd3f9d79d0f707c9 |
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sha1 | c2e9d8f54360b389a72246a40cf585ac98eb3757 |
sha256 | c80b7d745add2449d8cea9209e08e528d21b5db95a8d0318efff49d98733cad7 |
sha512 | 339ea9a9688598f48a1a7f403df7c40839f02231ab727cd92423ae9786f8a8d9dba80e5f789bc2d8a374e86a17bc699287cf1c07d620153b0ddb68344b363282 |
ripemd-160 | 26a92164b7b1b893986ec3de326df8fc0fa12b7d |
20809728 as geometric shapes
Circle
Radius = nDiameter | 41619456 |
---|---|
Circumference | 130751377.216 |
Area | 1.3604502977452E+15 |
Sphere
Radius = nVolume | 3.7747467538129E+22 |
---|---|
Surface area | 5.4418011909809E+15 |
Circumference | 130751377.216 |
Square
Length = nPerimeter | 83238912 |
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Area | 433044779433984 |
Diagonal | 29429399.566895 |
Cube
Length = nSurface area | 2598268676603904 |
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Volume | 9.0115440718412E+21 |
Space diagonal | 36043506.187689 |
Equilateral Triangle
Length = nPerimeter | 62429184 |
---|---|
Area | 1.8751388998303E+14 |
Altitude | 18021753.093844 |
Triangular Pyramid
Length = nSurface area | 1.8751388998303E+14 |
---|---|
Volume | 1.0620206536934E+21 |
Height | 9809799.8556317 |