81910012 (number)

81910012 is an even 8-digits composite number following 81910011 and preceding 81910013. In scientific notation, it is written as 8.1910012 × 10^7. The sum of its digits is 22. It has a total of 6 prime factors and 48 positive divisors. There are 37158912 positive integers (up to 81910012) that are relatively prime to 81910012.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred ten thousand twelve

Notation

Scientific notation 8.1910012 × 10^7
Engineering notation 8.1910012 × 10^6

Prime Factorization of 81910012

Prime Factorization 2 × 2 × 17 × 43 × 109 × 257

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40955006
Product of the distinct prime numbers

The prime factorization of 81910012 is 2 × 2 × 17 × 43 × 109 × 257. Since it has a total of 6 prime factors.

Most popular turbo-numbers

7, 7, 13, 30, 644, 378, 9060, 1802, 88628, 96614, 27306, 353689, 9849539, 1280017, 32121017, 26859545, 273698845, 679370484, 166442312, 47020543

Basic calculations (n = 81910012)

Multiplication

n×y
n×2 163820024
n×3 245730036
n×4 327640048
n×5 409550060

Division

n÷y
n÷2 40955006
n÷3 27303337.333333
n÷3 20477503
n÷5 16382002.4

Exponentiation

ny
n2 6709250065840144
n3 5.4955475340397E+23
n4 4.5014036445976E+31
n5 3.6871002654583E+39

Nth Root

y√n
2√n 9050.4150181083
3√n 434.28916715448
4√n 95.133669213945
5√n 38.253167128843

Divisors of 81910012

1, 2, 4, 17, 34, 43, 68, 86, 109, 172, 218, 257, 436, 514, 731, 1028, 1462, 1853, 2924, 3706, 4369, 4687, 7412, 8738, 9374, 11051, 17476, 18748, 22102, 28013, 44204, 56026, 79679, 112052, 159358, 187867, 318716, 375734, 476221, 751468, 952442, 1204559, 1904884, 2409118, 4818236, 20477503, 40955006, 81910012

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 -81910011
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 81910012 can be divided by 48 positive divisors. The sum of these divisors (counting 81910012) is 1, the average is 0.020833333333333.

Base conversion 81910012

Base System Value
2 Binary 100111000011101100011111100
3 Ternary 12201010110102011
4 Quaternary 10320131203330
5 Quinary 131432110022
6 Senary 12043341004
8 Octal 470354374
10 Decimal 81910012
12 Duodecimal 23521764
16 Hexadecimal 4e1d8fc
20 Vigesimal 15bif0c
36 Base36 1crm64

Cryptographic Hash Functions

md5 bf8c1b932699384fbe9c6b86be203e39
sha1 f13daf12255d21b64d4634b7c86561709457b795
sha256 2d897bc797fc1d74f0f29378e312e7e83a7fb594bde332da97385068bfda500d
sha512 c0d7cc62934279cbb0a622a20b1849f664a81b36ee5caa42176ddce9913266294c64af945f2c07efd1ef920716430ed00058cc51b0ccaa9a226996644b1fca92
ripemd-160 80fbf714b1fdcaddb97ec9c522111ad961b2e578

81910012 as geometric shapes

Circle

Radius = n
Diameter 163820024
Circumference 514655783.9093
Area 2.107773071794E+16

Sphere

Radius = n
Volume 2.3019695680523E+24
Surface area 8.4310922871761E+16
Circumference 514655783.9093

Square

Length = n
Perimeter 327640048
Area 6709250065840144
Diagonal 115838249.86454

Cube

Length = n
Surface area 40255500395040864
Volume 5.4955475340397E+23
Space diagonal 141872302.43258

Equilateral Triangle

Length = n
Perimeter 245730036
Area 2.90519049868E+15
Altitude 70936151.216288

Triangular Pyramid

Length = n
Surface area 2.90519049868E+15
Volume 6.4765648794208E+22
Height 38612749.954848