21991488 (number)
21991488 is an even 8-digits composite number following 21991487 and preceding 21991489. In scientific notation, it is written as 2.1991488 × 10^7. The sum of its digits is 42. It has a total of 9 prime factors and 56 positive divisors. There are 7171584 positive integers (up to 21991488) that are relatively prime to 21991488.
Interesting facts
- 21991488 has 56 divisors, whose sum is 59448192
- The reverse of 21991488 is 88419912
- Previous prime number is 47
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 42
- Digital Root 6
Name
Name | twenty-one million nine hundred ninety-one thousand four hundred eighty-eight |
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Notation
Scientific notation | 2.1991488 × 10^7 |
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Engineering notation | 2.1991488 × 10^6 |
Prime Factorization of 21991488
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 47 × 2437
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 9 | Total number of prime factors |
rad | Radical | 687234 | Product of the distinct prime numbers |
The prime factorization of 21991488 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 47 × 2437. Since it has a total of 9 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21991488)
Multiplication
n×yn×2 | 43982976 |
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n×3 | 65974464 |
n×4 | 87965952 |
n×5 | 109957440 |
Division
n÷yn÷2 | 10995744 |
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n÷3 | 7330496 |
n÷3 | 5497872 |
n÷5 | 4398297.6 |
Exponentiation
nyn2 | 483625544454144 |
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n3 | 1.0635645357357E+22 |
n4 | 2.3389366724857E+29 |
n5 | 5.1436697765729E+36 |
Nth Root
y√n2√n | 4689.508289789 |
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3√n | 280.16779058752 |
4√n | 68.4799845925 |
5√n | 29.407013651616 |
Divisors of 21991488
56 divisors
τ | Total Divisors | 56 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21991487 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.017857142857143 | 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 | 56 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21991488 can be divided by 56 positive divisors. The sum of these divisors (counting 21991488) is 1, the average is 0.017857142857143.
Base conversion 21991488
Base | System | Value |
---|---|---|
2 | Binary | 1010011111001000001000000 |
3 | Ternary | 1112101021122120 |
4 | Quaternary | 1103321001000 |
5 | Quinary | 21112211423 |
6 | Senary | 2103204240 |
8 | Octal | 123710100 |
10 | Decimal | 21991488 |
12 | Duodecimal | 7446680 |
16 | Hexadecimal | 14f9040 |
20 | Vigesimal | 6h8ie8 |
36 | Base36 | d3cqo |
Cryptographic Hash Functions
md5 | 7898efd02d310f16b978be45c0a63830 |
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sha1 | 959ea77b4f624e5d248698b04c7dff0c87ea5094 |
sha256 | 59628bf347bdb76a2b143a1679324e0acec6b350d0b30e6e15aa5eb4ab0b95bf |
sha512 | 2972df279c3cfdd2207160ab0079f6aa2de1f22d87ef6f8b50b8989a68829dedeee7fe906bf62d31dd085001024bc08078930d08d9ff6af5e9806613184d4851 |
ripemd-160 | e94bdd549e2d0980790dfed1aa15b89591d29aa6 |
21991488 as geometric shapes
Circle
Radius = nDiameter | 43982976 |
---|---|
Circumference | 138176594.28462 |
Area | 1.5193544575455E+15 |
Sphere
Radius = nVolume | 4.4550487094478E+22 |
---|---|
Surface area | 6.077417830182E+15 |
Circumference | 138176594.28462 |
Square
Length = nPerimeter | 87965952 |
---|---|
Area | 483625544454144 |
Diagonal | 31100660.586365 |
Cube
Length = nSurface area | 2901753266724864 |
---|---|
Volume | 1.0635645357357E+22 |
Space diagonal | 38090374.550041 |
Equilateral Triangle
Length = nPerimeter | 65974464 |
---|---|
Area | 2.0941600370818E+14 |
Altitude | 19045187.275021 |
Triangular Pyramid
Length = nSurface area | 2.0941600370818E+14 |
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Volume | 1.253422825747E+21 |
Height | 10366886.862122 |