21491288 (number)
21491288 is an even 8-digits composite number following 21491287 and preceding 21491289. In scientific notation, it is written as 2.1491288 × 10^7. The sum of its digits is 35. It has a total of 7 prime factors and 64 positive divisors. There are 8326656 positive integers (up to 21491288) that are relatively prime to 21491288.
Interesting facts
- 21491288 has 64 divisors, whose sum is 50621760
- The reverse of 21491288 is 88219412
- Previous prime number is 53
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 35
- Digital Root 8
Name
Name | twenty-one million four hundred ninety-one thousand two hundred eighty-eight |
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Notation
Scientific notation | 2.1491288 × 10^7 |
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Engineering notation | 2.1491288 × 10^6 |
Prime Factorization of 21491288
Prime Factorization 2 × 2 × 2 × 7 × 13 × 53 × 557
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 7 | Total number of prime factors |
rad | Radical | 5372822 | Product of the distinct prime numbers |
The prime factorization of 21491288 is 2 × 2 × 2 × 7 × 13 × 53 × 557. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21491288)
Multiplication
n×yn×2 | 42982576 |
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n×3 | 64473864 |
n×4 | 85965152 |
n×5 | 107456440 |
Division
n÷yn÷2 | 10745644 |
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n÷3 | 7163762.6666667 |
n÷3 | 5372822 |
n÷5 | 4298257.6 |
Exponentiation
nyn2 | 461875459898944 |
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n3 | 9.9262985288207E+21 |
n4 | 2.1332894045686E+29 |
n5 | 4.5847136980933E+36 |
Nth Root
y√n2√n | 4635.869713441 |
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3√n | 278.02732509215 |
4√n | 68.087221366722 |
5√n | 29.272006223764 |
Divisors of 21491288
64 divisors
τ | Total Divisors | 64 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21491287 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.015625 | 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 | 64 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21491288 can be divided by 64 positive divisors. The sum of these divisors (counting 21491288) is 1, the average is 0.015625.
Base conversion 21491288
Base | System | Value |
---|---|---|
2 | Binary | 1010001111110111001011000 |
3 | Ternary | 1111102212111122 |
4 | Quaternary | 1101332321120 |
5 | Quinary | 21000210123 |
6 | Senary | 2044344412 |
8 | Octal | 121767130 |
10 | Decimal | 21491288 |
12 | Duodecimal | 7245108 |
16 | Hexadecimal | 147ee58 |
20 | Vigesimal | 6e6848 |
36 | Base36 | csms8 |
Cryptographic Hash Functions
md5 | 7e33fd0458a374269a95da0071a75df9 |
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sha1 | 87cb80eede5abd4e5c3e7f69e1eaee01fffa1b51 |
sha256 | bdc5d200ef3139f715c37dd11b4f97b893263588879e60de4ac04addd47a899b |
sha512 | 21ef213418afa4083e53f17a3b04f343e65ed8f3ca3a1792cc4636f48d9841dc05cde7062734af42b35d5950e09353710e58489ab2535fe527cbc849a9fb5777 |
ripemd-160 | 2d61ee2e3df232f700ea386622397483c792061c |
21491288 as geometric shapes
Circle
Radius = nDiameter | 42982576 |
---|---|
Circumference | 135033744.99396 |
Area | 1.4510245516919E+15 |
Sphere
Radius = nVolume | 4.157918204731E+22 |
---|---|
Surface area | 5.8040982067677E+15 |
Circumference | 135033744.99396 |
Square
Length = nPerimeter | 85965152 |
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Area | 461875459898944 |
Diagonal | 30393270.962466 |
Cube
Length = nSurface area | 2771252759393664 |
---|---|
Volume | 9.9262985288207E+21 |
Space diagonal | 37224002.736095 |
Equilateral Triangle
Length = nPerimeter | 64473864 |
---|---|
Area | 1.9999794082855E+14 |
Altitude | 18612001.368048 |
Triangular Pyramid
Length = nSurface area | 1.9999794082855E+14 |
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Volume | 1.1698255003019E+21 |
Height | 10131090.320822 |