81298980 (number)
81298980 is an even 8-digits composite number following 81298979 and preceding 81298981. In scientific notation, it is written as 8.1298980 × 10^7. The sum of its digits is 45. It has a total of 6 prime factors and 48 positive divisors. There are 18385920 positive integers (up to 81298980) that are relatively prime to 81298980.
Interesting facts
- 81298980 has 48 divisors, whose sum is 167975808
- The reverse of 81298980 is 08989218
- Previous prime number is 113
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 45
- Digital Root 9
Name
Name | eighty-one million two hundred ninety-eight thousand nine hundred eighty |
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Notation
Scientific notation | 8.1298980 × 10^7 |
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Engineering notation | 8.1298980 × 10^6 |
Prime Factorization of 81298980
Prime Factorization 2 × 2 × 45 × 7 × 113 × 571
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 40649490 | Product of the distinct prime numbers |
The prime factorization of 81298980 is 2 × 2 × 45 × 7 × 113 × 571. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81298980)
Multiplication
n×yn×2 | 162597960 |
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n×3 | 243896940 |
n×4 | 325195920 |
n×5 | 406494900 |
Division
n÷yn÷2 | 40649490 |
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n÷3 | 27099660 |
n÷3 | 20324745 |
n÷5 | 16259796 |
Exponentiation
nyn2 | 6609524149040400 |
---|---|
n3 | 5.3734757160235E+23 |
n4 | 4.3685809476748E+31 |
n5 | 3.551611750934E+39 |
Nth Root
y√n2√n | 9016.5947008835 |
---|---|
3√n | 433.20656778537 |
4√n | 94.955751278601 |
5√n | 38.195923897404 |
Divisors of 81298980
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 | -81298979 | 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 81298980 can be divided by 48 positive divisors. The sum of these divisors (counting 81298980) is 1, the average is 0.020833333333333.
Base conversion 81298980
Base | System | Value |
---|---|---|
2 | Binary | 100110110001000011000100100 |
3 | Ternary | 12122222102020100 |
4 | Quaternary | 10312020120210 |
5 | Quinary | 131303031410 |
6 | Senary | 12022304100 |
8 | Octal | 466103044 |
10 | Decimal | 81298980 |
12 | Duodecimal | 23288030 |
16 | Hexadecimal | 4d88624 |
20 | Vigesimal | 1582790 |
36 | Base36 | 1ceip0 |
Cryptographic Hash Functions
md5 | e0897a474c53cfeeb8fa67f29243b4b6 |
---|---|
sha1 | ca93c38c6e4a510cffd196f83b9d6b4688445e25 |
sha256 | be03ece63ab1b3dc331a2f39e2f6aed68c8ff30af23d1386b87adc3f5ff1e08b |
sha512 | 05ffe1fe67b9020a052f70b4935d61585818282d6be5d56ac332c2585f9939c1e17ec131c8a9ad866d4ba19ac46456e89057e42aee2b531e5121a76e6796551a |
ripemd-160 | 356b4afeca423738f3a8862908e28e367fb6608f |
81298980 as geometric shapes
Circle
Radius = nDiameter | 162597960 |
---|---|
Circumference | 510816556.62469 |
Area | 2.076443251035E+16 |
Sphere
Radius = nVolume | 2.2508362444937E+24 |
---|---|
Surface area | 8.3057730041399E+16 |
Circumference | 510816556.62469 |
Square
Length = nPerimeter | 325195920 |
---|---|
Area | 6609524149040400 |
Diagonal | 114974120.1231 |
Cube
Length = nSurface area | 39657144894242400 |
---|---|
Volume | 5.3734757160235E+23 |
Space diagonal | 140813963.96353 |
Equilateral Triangle
Length = nPerimeter | 243896940 |
---|---|
Area | 2.8620079099979E+15 |
Altitude | 70406981.981763 |
Triangular Pyramid
Length = nSurface area | 2.8620079099979E+15 |
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Volume | 6.3327018622358E+22 |
Height | 38324706.7077 |