81489620 (number)
81489620 is an even 8-digits composite number following 81489619 and preceding 81489621. In scientific notation, it is written as 8.1489620 × 10^7. The sum of its digits is 38. It has a total of 6 prime factors and 48 positive divisors. There are 31414656 positive integers (up to 81489620) that are relatively prime to 81489620.
Interesting facts
- 81489620 has 48 divisors, whose sum is 177448320
- The reverse of 81489620 is 02698418
- Previous prime number is 59
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 38
- Digital Root 2
Name
Name | eighty-one million four hundred eighty-nine thousand six hundred twenty |
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Notation
Scientific notation | 8.1489620 × 10^7 |
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Engineering notation | 8.1489620 × 10^6 |
Prime Factorization of 81489620
Prime Factorization 2 × 2 × 5 × 53 × 59 × 1303
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 40744810 | Product of the distinct prime numbers |
The prime factorization of 81489620 is 2 × 2 × 5 × 53 × 59 × 1303. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 81489620)
Multiplication
n×yn×2 | 162979240 |
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n×3 | 244468860 |
n×4 | 325958480 |
n×5 | 407448100 |
Division
n÷yn÷2 | 40744810 |
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n÷3 | 27163206.666667 |
n÷3 | 20372405 |
n÷5 | 16297924 |
Exponentiation
nyn2 | 6640558167744400 |
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n3 | 5.4113656167739E+23 |
n4 | 4.4097012779197E+31 |
n5 | 3.5934488145119E+39 |
Nth Root
y√n2√n | 9027.1601292987 |
---|---|
3√n | 433.54491574086 |
4√n | 95.011368421356 |
5√n | 38.21382043322 |
Divisors of 81489620
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 | -81489619 | 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 81489620 can be divided by 48 positive divisors. The sum of these divisors (counting 81489620) is 1, the average is 0.020833333333333.
Base conversion 81489620
Base | System | Value |
---|---|---|
2 | Binary | 100110110110110111011010100 |
3 | Ternary | 12200100002202002 |
4 | Quaternary | 10312312323110 |
5 | Quinary | 131330131440 |
6 | Senary | 12030334432 |
8 | Octal | 466667324 |
10 | Decimal | 81489620 |
12 | Duodecimal | 2335a418 |
16 | Hexadecimal | 4db6ed4 |
20 | Vigesimal | 1596410 |
36 | Base36 | 1cilsk |
Cryptographic Hash Functions
md5 | 2c4251496c298b4f3d4b3e389a2d1d07 |
---|---|
sha1 | a4a6b83120b7891233c6eff9c3ab52fea9cc9984 |
sha256 | 64e328465b491e284361ce454851ebbfb3734bf61935af95d42350a224b47f53 |
sha512 | 4854acee49c0fa9f20f0324d736c2650bb3565a723133c296c2e861ec2b54bb6826b0f7f76a99156c0010ef4df98e3d454eae2a2662c13e7aaee8df310fae76d |
ripemd-160 | 07e4a90a201c5573a8d90a3da4a2b9f7a8d86a6e |
81489620 as geometric shapes
Circle
Radius = nDiameter | 162979240 |
---|---|
Circumference | 512014383.07165 |
Area | 2.0861928755522E+16 |
Sphere
Radius = nVolume | 2.266707529006E+24 |
---|---|
Surface area | 8.3447715022086E+16 |
Circumference | 512014383.07165 |
Square
Length = nPerimeter | 325958480 |
---|---|
Area | 6640558167744400 |
Diagonal | 115243725.79663 |
Cube
Length = nSurface area | 39843349006466400 |
---|---|
Volume | 5.4113656167739E+23 |
Space diagonal | 141144162.12948 |
Equilateral Triangle
Length = nPerimeter | 244468860 |
---|---|
Area | 2.8754460342874E+15 |
Altitude | 70572081.06474 |
Triangular Pyramid
Length = nSurface area | 2.8754460342874E+15 |
---|---|
Volume | 6.3773555385009E+22 |
Height | 38414575.265543 |