21031728 (number)
21031728 is an even 8-digits composite number following 21031727 and preceding 21031729. In scientific notation, it is written as 2.1031728 × 10^7. The sum of its digits is 24. It has a total of 8 prime factors and 60 positive divisors. There are 6755840 positive integers (up to 21031728) that are relatively prime to 21031728.
Interesting facts
- 21031728 has 60 divisors, whose sum is 56378088
- The reverse of 21031728 is 82713012
- Previous prime number is 29
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 24
- Digital Root 6
Name
Name | twenty-one million thirty-one thousand seven hundred twenty-eight |
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Notation
Scientific notation | 2.1031728 × 10^7 |
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Engineering notation | 2.1031728 × 10^6 |
Prime Factorization of 21031728
Prime Factorization 2 × 2 × 2 × 2 × 3 × 29 × 29 × 521
Composite numberω | Distinct Factors | 4 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 8 | Total number of prime factors |
rad | Radical | 90654 | Product of the distinct prime numbers |
The prime factorization of 21031728 is 2 × 2 × 2 × 2 × 3 × 29 × 29 × 521. Since it has a total of 8 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21031728)
Multiplication
n×yn×2 | 42063456 |
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n×3 | 63095184 |
n×4 | 84126912 |
n×5 | 105158640 |
Division
n÷yn÷2 | 10515864 |
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n÷3 | 7010576 |
n÷3 | 5257932 |
n÷5 | 4206345.6 |
Exponentiation
nyn2 | 442333582665984 |
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n3 | 9.3030395958965E+21 |
n4 | 1.9565899835412E+29 |
n5 | 4.1150468341364E+36 |
Nth Root
y√n2√n | 4586.0361969788 |
---|---|
3√n | 276.03129239822 |
4√n | 67.720279067491 |
5√n | 29.145733618883 |
Divisors of 21031728
60 divisors
τ | Total Divisors | 60 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21031727 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.016666666666667 | 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 | 60 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21031728 can be divided by 60 positive divisors. The sum of these divisors (counting 21031728) is 1, the average is 0.016666666666667.
Base conversion 21031728
Base | System | Value |
---|---|---|
2 | Binary | 1010000001110101100110000 |
3 | Ternary | 1110120112002220 |
4 | Quaternary | 1100032230300 |
5 | Quinary | 20341003403 |
6 | Senary | 2030441040 |
8 | Octal | 120165460 |
10 | Decimal | 21031728 |
12 | Duodecimal | 7063180 |
16 | Hexadecimal | 140eb30 |
20 | Vigesimal | 6b8j68 |
36 | Base36 | cis6o |
Cryptographic Hash Functions
md5 | 436e662b4f29ca73b543ed30b7c54e0d |
---|---|
sha1 | 54231be3ae3fca40f43bda779400a8187e3c5a55 |
sha256 | 716264db8af662a11fdd603a862249a6a33c01119e64507c3f9f4bba95b06f85 |
sha512 | ac5d608633c3a6539515d351f5c5bccf6e9331d90a9eb09d6b8dfd2d8b9a45e66aef8be4b54b524a1fd4ffad235a0e259691ef6e3778b573067526fbe02773e3 |
ripemd-160 | 2d0837d430662c9d4459c82d398f502e9d9a03b6 |
21031728 as geometric shapes
Circle
Radius = nDiameter | 42063456 |
---|---|
Circumference | 132146244.3542 |
Area | 1.3896319337395E+15 |
Sphere
Radius = nVolume | 3.8968481134031E+22 |
---|---|
Surface area | 5.558527734958E+15 |
Circumference | 132146244.3542 |
Square
Length = nPerimeter | 84126912 |
---|---|
Area | 442333582665984 |
Diagonal | 29743354.977742 |
Cube
Length = nSurface area | 2654001495995904 |
---|---|
Volume | 9.3030395958965E+21 |
Space diagonal | 36428021.466969 |
Equilateral Triangle
Length = nPerimeter | 63095184 |
---|---|
Area | 1.9153605976786E+14 |
Altitude | 18214010.733484 |
Triangular Pyramid
Length = nSurface area | 1.9153605976786E+14 |
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Volume | 1.0963737306509E+21 |
Height | 9914451.6592473 |