21388992 (number)
21388992 is an even 8-digits composite number following 21388991 and preceding 21388993. In scientific notation, it is written as 2.1388992 × 10^7. The sum of its digits is 42. It has a total of 9 prime factors and 56 positive divisors. There are 6709248 positive integers (up to 21388992) that are relatively prime to 21388992.
Interesting facts
- 21388992 has 56 divisors, whose sum is 59929776
- The reverse of 21388992 is 29988312
- Previous prime number is 17
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 42
- Digital Root 6
Name
Name | twenty-one million three hundred eighty-eight thousand nine hundred ninety-two |
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Notation
Scientific notation | 2.1388992 × 10^7 |
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Engineering notation | 2.1388992 × 10^6 |
Prime Factorization of 21388992
Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 17 × 6553
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 9 | Total number of prime factors |
rad | Radical | 668406 | Product of the distinct prime numbers |
The prime factorization of 21388992 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 17 × 6553. Since it has a total of 9 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21388992)
Multiplication
n×yn×2 | 42777984 |
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n×3 | 64166976 |
n×4 | 85555968 |
n×5 | 106944960 |
Division
n÷yn÷2 | 10694496 |
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n÷3 | 7129664 |
n÷3 | 5347248 |
n÷5 | 4277798.4 |
Exponentiation
nyn2 | 457488978776064 |
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n3 | 9.7852281071294E+21 |
n4 | 2.0929616570157E+29 |
n5 | 4.4766340138215E+36 |
Nth Root
y√n2√n | 4624.82345609 |
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3√n | 277.58549755784 |
4√n | 68.00605455465 |
5√n | 29.244086755193 |
Divisors of 21388992
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 | -21388991 | 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 21388992 can be divided by 56 positive divisors. The sum of these divisors (counting 21388992) is 1, the average is 0.017857142857143.
Base conversion 21388992
Base | System | Value |
---|---|---|
2 | Binary | 1010001100101111011000000 |
3 | Ternary | 1111020200011220 |
4 | Quaternary | 1101211323000 |
5 | Quinary | 20433421432 |
6 | Senary | 2042235040 |
8 | Octal | 121457300 |
10 | Decimal | 21388992 |
12 | Duodecimal | 71b5a80 |
16 | Hexadecimal | 1465ec0 |
20 | Vigesimal | 6ddc9c |
36 | Base36 | cqfuo |
Cryptographic Hash Functions
md5 | 194ba942e88e5cbcaa25217a7597e0ab |
---|---|
sha1 | 58e314dfb9da7d09309ca5c308508666a2097a44 |
sha256 | 3265c528c436a6a097d172533b6e460b3fc3d27d423c51c557441000ce02cc49 |
sha512 | 3f28cb0cebc33c6c8818b6a658d13acf165361c094fd8d3497c64f81765090c9499602763ba8e6cd3640701b79a92af2942cd4ba1c8c68b1c8016b9313d5f566 |
ripemd-160 | 7f3a2e482fd5566407bbecd7235f15379f58211e |
21388992 as geometric shapes
Circle
Radius = nDiameter | 42777984 |
---|---|
Circumference | 134391000.26978 |
Area | 1.4372440148212E+15 |
Sphere
Radius = nVolume | 4.0988267646744E+22 |
---|---|
Surface area | 5.7489760592847E+15 |
Circumference | 134391000.26978 |
Square
Length = nPerimeter | 85555968 |
---|---|
Area | 457488978776064 |
Diagonal | 30248602.57189 |
Cube
Length = nSurface area | 2744933872656384 |
---|---|
Volume | 9.7852281071294E+21 |
Space diagonal | 37046820.866684 |
Equilateral Triangle
Length = nPerimeter | 64166976 |
---|---|
Area | 1.9809853878574E+14 |
Altitude | 18523410.433342 |
Triangular Pyramid
Length = nSurface area | 1.9809853878574E+14 |
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Volume | 1.1532001916681E+21 |
Height | 10082867.523963 |