81296985 (number)

81296985 is an odd 8-digits composite number following 81296984 and preceding 81296986. In scientific notation, it is written as 8.1296985 × 10^7. The sum of its digits is 48. It has a total of 5 prime factors and 32 positive divisors. There are 33185280 positive integers (up to 81296985) that are relatively prime to 81296985.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-six thousand nine hundred eighty-five

Notation

Scientific notation 8.1296985 × 10^7
Engineering notation 8.1296985 × 10^6

Prime Factorization of 81296985

Prime Factorization 5 × 3 × 77 × 59 × 1193

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81296985
Product of the distinct prime numbers

The prime factorization of 81296985 is 5 × 3 × 77 × 59 × 1193. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 5, 94, 69, 17, 703, 1526, 9921, 33886, 21381, 53203, 40842, 6177897, 7193734, 66316018, 89066145, 366414960, 677905196, 7565884179, 5749582474

Basic calculations (n = 81296985)

Multiplication

n×y
n×2 162593970
n×3 243890955
n×4 325187940
n×5 406484925

Division

n÷y
n÷2 40648492.5
n÷3 27098995
n÷3 20324246.25
n÷5 16259397

Exponentiation

ny
n2 6609199770090225
n3 5.3730801457103E+23
n4 4.3681521600961E+31
n5 3.5511760063705E+39

Nth Root

y√n
2√n 9016.484070856
3√n 433.20302426337
4√n 94.955168742181
5√n 38.195736437201

Divisors of 81296985

1, 3, 5, 15, 59, 77, 177, 231, 295, 385, 885, 1155, 1193, 3579, 4543, 5965, 13629, 17895, 22715, 68145, 70387, 91861, 211161, 275583, 351935, 459305, 1055805, 1377915, 5419799, 16259397, 27098995, 81296985

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 -81296984
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 81296985 can be divided by 32 positive divisors. The sum of these divisors (counting 81296985) is 1, the average is 0.03125.

Base conversion 81296985

Base System Value
2 Binary 100110110000111111001011001
3 Ternary 12122222022111110
4 Quaternary 10312013321121
5 Quinary 131303000420
6 Senary 12022250533
8 Octal 466077131
10 Decimal 81296985
12 Duodecimal 23286a49
16 Hexadecimal 4d87e59
20 Vigesimal 1582295
36 Base36 1ceh5l

Cryptographic Hash Functions

md5 ad916cf1f4656513b0d9a92600ca7426
sha1 6a3d30c274ddd3b1941e17a2b6388d3e3f2b86e3
sha256 a1d6c2750b373689f7891134e4a10b860b51d05576cf345b4058c00d3be0d196
sha512 0dd7c3aae41ec96f09059a741b7bd0cc130752f472d4919958077a801dd4855d0185c3bed39d64cbe8f92c1e7535f3440c180cf2d9cce965242466759513eb5a
ripemd-160 161adf710bd0d13857ee23e92ba1060b956447f1

81296985 as geometric shapes

Circle

Radius = n
Diameter 162593970
Circumference 510804021.67
Area 2.0763413443823E+16

Sphere

Radius = n
Volume 2.2506705483883E+24
Surface area 8.3053653775291E+16
Circumference 510804021.67

Square

Length = n
Perimeter 325187940
Area 6609199770090225
Diagonal 114971298.76704

Cube

Length = n
Surface area 39655198620541350
Volume 5.3730801457103E+23
Space diagonal 140810508.52216

Equilateral Triangle

Length = n
Perimeter 243890955
Area 2.8618674497922E+15
Altitude 70405254.261082

Triangular Pyramid

Length = n
Surface area 2.8618674497922E+15
Volume 6.3322356781509E+22
Height 38323766.255681