21081888 (number)
21081888 is an even 8-digits composite number following 21081887 and preceding 21081889. In scientific notation, it is written as 2.1081888 × 10^7. The sum of its digits is 36. It has a total of 8 prime factors and 48 positive divisors. There are 6921600 positive integers (up to 21081888) that are relatively prime to 21081888.
Interesting facts
- 21081888 has 48 divisors, whose sum is 46811520
- The reverse of 21081888 is 88818012
- Previous prime number is 71
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 36
- Digital Root 9
Name
Name | twenty-one million eighty-one thousand eight hundred eighty-eight |
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Notation
Scientific notation | 2.1081888 × 10^7 |
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Engineering notation | 2.1081888 × 10^6 |
Prime Factorization of 21081888
Prime Factorization 2 × 2 × 2 × 2 × 2 × 9 × 71 × 1031
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 8 | Total number of prime factors |
rad | Radical | 1317618 | Product of the distinct prime numbers |
The prime factorization of 21081888 is 2 × 2 × 2 × 2 × 2 × 9 × 71 × 1031. Since it has a total of 8 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21081888)
Multiplication
n×yn×2 | 42163776 |
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n×3 | 63245664 |
n×4 | 84327552 |
n×5 | 105409440 |
Division
n÷yn÷2 | 10540944 |
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n÷3 | 7027296 |
n÷3 | 5270472 |
n÷5 | 4216377.6 |
Exponentiation
nyn2 | 444446001644544 |
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n3 | 9.3697608287181E+21 |
n4 | 1.9753224837782E+29 |
n5 | 4.1643527366894E+36 |
Nth Root
y√n2√n | 4591.5017151255 |
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3√n | 276.25056011571 |
4√n | 67.760620681377 |
5√n | 29.15962270407 |
Divisors of 21081888
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 | -21081887 | 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 21081888 can be divided by 48 positive divisors. The sum of these divisors (counting 21081888) is 1, the average is 0.020833333333333.
Base conversion 21081888
Base | System | Value |
---|---|---|
2 | Binary | 1010000011010111100100000 |
3 | Ternary | 1110200001220200 |
4 | Quaternary | 1100122330200 |
5 | Quinary | 20344110023 |
6 | Senary | 2031505200 |
8 | Octal | 120327440 |
10 | Decimal | 21081888 |
12 | Duodecimal | 7088200 |
16 | Hexadecimal | 141af20 |
20 | Vigesimal | 6bf4e8 |
36 | Base36 | cjuw0 |
Cryptographic Hash Functions
md5 | e0fa929f1ae1fa231e0bba7c94c62bb7 |
---|---|
sha1 | 95be413e0e5750a86f3a266ba3e8c9f4d1c23123 |
sha256 | fc06c554fbbc9d6d0569d11bd01165cdd4d12320097125aa3e1ca9e4ced16c3c |
sha512 | fdd6b3833eacc2f4a81ecd75d9360cc340899595ee34ffa34aa329f31ff7b7e0433e0f0dd93fc1e8fb24013938660817c084c31c37e82547df3c6169cd6bf714 |
ripemd-160 | 63a2c108de93984bf2cf3eaf971c5d148540b54e |
21081888 as geometric shapes
Circle
Radius = nDiameter | 42163776 |
---|---|
Circumference | 132461408.92921 |
Area | 1.3962682936839E+15 |
Sphere
Radius = nVolume | 3.9247962380526E+22 |
---|---|
Surface area | 5.5850731747354E+15 |
Circumference | 132461408.92921 |
Square
Length = nPerimeter | 84327552 |
---|---|
Area | 444446001644544 |
Diagonal | 29814291.930031 |
Cube
Length = nSurface area | 2666676009867264 |
---|---|
Volume | 9.3697608287181E+21 |
Space diagonal | 36514901.135477 |
Equilateral Triangle
Length = nPerimeter | 63245664 |
---|---|
Area | 1.924507640173E+14 |
Altitude | 18257450.567738 |
Triangular Pyramid
Length = nSurface area | 1.924507640173E+14 |
---|---|
Volume | 1.1042369033471E+21 |
Height | 9938097.3100102 |