638991690 (number)
638991690 is an even 9-digits composite number following 638991689 and preceding 638991691. In scientific notation, it is written as 6.38991690 × 10^8. The sum of its digits is 51. It has a total of 5 prime factors and 32 positive divisors. There are 170309184 positive integers (up to 638991690) that are relatively prime to 638991690.
Interesting facts
- 638991690 has 32 divisors, whose sum is 1534377600
- The reverse of 638991690 is 096199836
- Previous prime number is 2477
Basic properties
- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 51
- Digital Root 6
Name
Name | six hundred thirty-eight million nine hundred ninety-one thousand six hundred ninety |
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Notation
Scientific notation | 6.38991690 × 10^8 |
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Engineering notation | 6.38991690 × 10^6 |
Prime Factorization of 638991690
Prime Factorization 2 × 3 × 5 × 2477 × 8599
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 5 | Total number of prime factors |
rad | Radical | 638991690 | Product of the distinct prime numbers |
The prime factorization of 638991690 is 2 × 3 × 5 × 2477 × 8599. Since it has a total of 5 prime factors.
Most popular turbo-numbers
Basic calculations (n = 638991690)
Multiplication
n×yn×2 | 1277983380 |
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n×3 | 1916975070 |
n×4 | 2555966760 |
n×5 | 3194958450 |
Division
n÷yn÷2 | 319495845 |
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n÷3 | 212997230 |
n÷3 | 159747922.5 |
n÷5 | 127798338 |
Exponentiation
nyn2 | 408310379889056100 |
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n3 | 2.6090693968985E+26 |
n4 | 1.6671736632515E+35 |
n5 | 1.0653101166045E+44 |
Nth Root
y√n2√n | 25278.284949735 |
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3√n | 861.32106770648 |
4√n | 158.99146187684 |
5√n | 57.689801156971 |
Divisors of 638991690
32 divisors
τ | Total Divisors | 32 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -638991689 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.03125 | 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 | 32 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 638991690 can be divided by 32 positive divisors. The sum of these divisors (counting 638991690) is 1, the average is 0.03125.
Base conversion 638991690
Base | System | Value |
---|---|---|
2 | Binary | 100110000101100011110101001010 |
3 | Ternary | 1122112101010210220 |
4 | Quaternary | 212011203311022 |
5 | Quinary | 2302040213230 |
6 | Senary | 143223450510 |
8 | Octal | 4605436512 |
10 | Decimal | 638991690 |
12 | Duodecimal | 159bb6a36 |
16 | Hexadecimal | 26163d4a |
20 | Vigesimal | 9jddj4a |
36 | Base36 | akft56 |
Cryptographic Hash Functions
md5 | 915c7d6b08cdd2f2684f8cbb5ae17cef |
---|---|
sha1 | a2354da20771326bdd68cc5756a588dcca1cee25 |
sha256 | 6ee4ae512421b4b16e0a11ab56b22cdf42702497e64e6006730d80fa103fb4ff |
sha512 | 1d2367ee1967ed4d349843f823c08b8dcd96cba40c58c299ba67da9bfa8e7fd8c2f0a17d8b80ddb857ad5c61d02649c0520e9ed083b24d62d69c15227a5e4d1b |
ripemd-160 | b0a3ff1d8929c3ead54a842ca2a12b80ba487f28 |
638991690 as geometric shapes
Circle
Radius = nDiameter | 1277983380 |
---|---|
Circumference | 4014903198.0179 |
Area | 1.2827448898439E+18 |
Sphere
Radius = nVolume | 1.0928844333336E+27 |
---|---|
Surface area | 5.1309795593757E+18 |
Circumference | 4014903198.0179 |
Square
Length = nPerimeter | 2555966760 |
---|---|
Area | 408310379889056100 |
Diagonal | 903670714.2417 |
Cube
Length = nSurface area | 2449862279334336600 |
---|---|
Volume | 2.6090693968985E+26 |
Space diagonal | 1106766072.6943 |
Equilateral Triangle
Length = nPerimeter | 1916975070 |
---|---|
Area | 1.768035808064E+17 |
Altitude | 553383036.34715 |
Triangular Pyramid
Length = nSurface area | 1.768035808064E+17 |
---|---|
Volume | 3.0748177718887E+25 |
Height | 301223571.4139 |