81129213 (number)

81129213 is an odd 8-digits composite number following 81129212 and preceding 81129214. In scientific notation, it is written as 8.1129213 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors. There are 49169160 positive integers (up to 81129213) that are relatively prime to 81129213.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-nine thousand two hundred thirteen

Notation

Scientific notation 8.1129213 × 10^7
Engineering notation 8.1129213 × 10^6

Prime Factorization of 81129213

Prime Factorization 11 × 3 × 3 × 819487

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 27043071
Product of the distinct prime numbers

The prime factorization of 81129213 is 11 × 3 × 3 × 819487. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 5, 82, 62, 644, 372, 823, 7884, 3990, 56399, 957845, 506480, 7629162, 3736922, 20837415, 13026496, 764330694, 823084800, 35711026, 9701973303

Basic calculations (n = 81129213)

Multiplication

n×y
n×2 162258426
n×3 243387639
n×4 324516852
n×5 405646065

Division

n÷y
n÷2 40564606.5
n÷3 27043071
n÷3 20282303.25
n÷5 16225842.6

Exponentiation

ny
n2 6581949201999369
n3 5.3398835876419E+23
n4 4.33220552977E+31
n5 3.5146842518449E+39

Nth Root

y√n
2√n 9007.1756394555
3√n 432.90481971893
4√n 94.906141210437
5√n 38.179958554529

Divisors of 81129213

1, 3, 9, 11, 33, 99, 819487, 2458461, 7375383, 9014357, 27043071, 81129213

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81129212
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81129213 can be divided by 12 positive divisors. The sum of these divisors (counting 81129213) is 1, the average is 0.083333333333333.

Base conversion 81129213

Base System Value
2 Binary 100110101011110111011111101
3 Ternary 12122122210100200
4 Quaternary 10311132323331
5 Quinary 131232113323
6 Senary 12014514113
8 Octal 465367375
10 Decimal 81129213
12 Duodecimal 23205939
16 Hexadecimal 4d5eefd
20 Vigesimal 157130d
36 Base36 1cavp9

Cryptographic Hash Functions

md5 077a06e8a1d236c761226528895573b5
sha1 6961a724f6f6f6d6ad01a063a7b94f89312918cc
sha256 ffd446e458634a8b1359f9ebd05133d79d5771a6eb6da8a08ab67af76429f6f2
sha512 7ac60a1fa28c8897de6596595a323f001e93c5dac3ad6cb9aef045d0b3266476af0eb0573464ac7a2b24dbce118898192cb8375821bc7e4e59612a88dfca5383
ripemd-160 e94a418698c522d331739ffb22714fc831539830

81129213 as geometric shapes

Circle

Radius = n
Diameter 162258426
Circumference 509749879.10464
Area 2.0677803259302E+16

Sphere

Radius = n
Volume 2.2367652066614E+24
Surface area 8.271121303721E+16
Circumference 509749879.10464

Square

Length = n
Perimeter 324516852
Area 6581949201999369
Diagonal 114734033.32926

Cube

Length = n
Surface area 39491695211996214
Volume 5.3398835876419E+23
Space diagonal 140519918.89408

Equilateral Triangle

Length = n
Perimeter 243387639
Area 2.8500676076751E+15
Altitude 70259959.447039

Triangular Pyramid

Length = n
Surface area 2.8500676076751E+15
Volume 6.2931131592805E+22
Height 38244677.776419