21081438 (number)
21081438 is an even 8-digits composite number following 21081437 and preceding 21081439. In scientific notation, it is written as 2.1081438 × 10^7. The sum of its digits is 27. It has a total of 7 prime factors and 64 positive divisors. There are 5878656 positive integers (up to 21081438) that are relatively prime to 21081438.
Interesting facts
- 21081438 has 64 divisors, whose sum is 54827520
- The reverse of 21081438 is 83418012
- Previous prime number is 3
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 27
- Digital Root 9
Name
Name | twenty-one million eighty-one thousand four hundred thirty-eight |
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Notation
Scientific notation | 2.1081438 × 10^7 |
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Engineering notation | 2.1081438 × 10^6 |
Prime Factorization of 21081438
Prime Factorization 2 × 3 × 7 × 3 × 43 × 3 × 1297
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 7 | Total number of prime factors |
rad | Radical | 2342382 | Product of the distinct prime numbers |
The prime factorization of 21081438 is 2 × 3 × 7 × 3 × 43 × 3 × 1297. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21081438)
Multiplication
n×yn×2 | 42162876 |
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n×3 | 63244314 |
n×4 | 84325752 |
n×5 | 105407190 |
Division
n÷yn÷2 | 10540719 |
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n÷3 | 7027146 |
n÷3 | 5270359.5 |
n÷5 | 4216287.6 |
Exponentiation
nyn2 | 444427028147844 |
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n3 | 9.369160839423E+21 |
n4 | 1.9751538334832E+29 |
n5 | 4.1639083081039E+36 |
Nth Root
y√n2√n | 4591.4527112887 |
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3√n | 276.24859454797 |
4√n | 67.760259085165 |
5√n | 29.159498218613 |
Divisors of 21081438
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 | -21081437 | 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 21081438 can be divided by 64 positive divisors. The sum of these divisors (counting 21081438) is 1, the average is 0.015625.
Base conversion 21081438
Base | System | Value |
---|---|---|
2 | Binary | 1010000011010110101011110 |
3 | Ternary | 1110200001022000 |
4 | Quaternary | 1100122311132 |
5 | Quinary | 20344101223 |
6 | Senary | 2031503130 |
8 | Octal | 120326536 |
10 | Decimal | 21081438 |
12 | Duodecimal | 7087aa6 |
16 | Hexadecimal | 141ad5e |
20 | Vigesimal | 6bf3bi |
36 | Base36 | cjuji |
Cryptographic Hash Functions
md5 | 62e2d6599a78bed45152924845e1dd16 |
---|---|
sha1 | 091ac05d46cd65d8e04fd194929b8a105276b06a |
sha256 | fb301f40ec9ec850454efac60225ea86bf2eef2bac7dc627936d52fbcda790cc |
sha512 | 5d6be1b948edf2a7b07fba5ac3fda305988b89211221971194187d4db03010dfb4fdafdba0c9f74cdd10b69ac11518e1f505ccbc96a969e0d946296c5c1f5e71 |
ripemd-160 | 781bac8b2b42b90d33e4eb99827c2e4178d9344d |
21081438 as geometric shapes
Circle
Radius = nDiameter | 42162876 |
---|---|
Circumference | 132458581.49582 |
Area | 1.396208686686E+15 |
Sphere
Radius = nVolume | 3.9245449151243E+22 |
---|---|
Surface area | 5.584834746744E+15 |
Circumference | 132458581.49582 |
Square
Length = nPerimeter | 84325752 |
---|---|
Area | 444427028147844 |
Diagonal | 29813655.533928 |
Cube
Length = nSurface area | 2666562168887064 |
---|---|
Volume | 9.369160839423E+21 |
Space diagonal | 36514121.712613 |
Equilateral Triangle
Length = nPerimeter | 63244314 |
---|---|
Area | 1.9244254825223E+14 |
Altitude | 18257060.856307 |
Triangular Pyramid
Length = nSurface area | 1.9244254825223E+14 |
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Volume | 1.1041661939306E+21 |
Height | 9937885.1779758 |