81129843 (number)

81129843 is an odd 8-digits composite number following 81129842 and preceding 81129844. In scientific notation, it is written as 8.1129843 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 20 positive divisors. There are 53978400 positive integers (up to 81129843) that are relatively prime to 81129843.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-nine thousand eight hundred forty-three

Notation

Scientific notation 8.1129843 × 10^7
Engineering notation 8.1129843 × 10^6

Prime Factorization of 81129843

Prime Factorization 9 × 3 × 3 × 1051 × 953

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 27043281
Product of the distinct prime numbers

The prime factorization of 81129843 is 9 × 3 × 3 × 1051 × 953. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81129843)

Multiplication

n×y
n×2 162259686
n×3 243389529
n×4 324519372
n×5 405649215

Division

n÷y
n÷2 40564921.5
n÷3 27043281
n÷3 20282460.75
n÷5 16225968.6

Exponentiation

ny
n2 6582051425204649
n3 5.3400079874478E+23
n4 4.3323400964039E+31
n5 3.5148207184385E+39

Nth Root

y√n
2√n 9007.2106115045
3√n 432.90594027432
4√n 94.906325455707
5√n 38.1800178508

Divisors of 81129843

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81129842
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81129843 can be divided by 20 positive divisors. The sum of these divisors (counting 81129843) is 1, the average is 0.05.

Base conversion 81129843

Base System Value
2 Binary 100110101011111000101110011
3 Ternary 12122122211020000
4 Quaternary 10311133011303
5 Quinary 131232123333
6 Senary 12014521043
8 Octal 465370563
10 Decimal 81129843
12 Duodecimal 23206183
16 Hexadecimal 4d5f173
20 Vigesimal 15714c3
36 Base36 1caw6r

Cryptographic Hash Functions

md5 c6a231c052eb7ba03c84a4af77485dac
sha1 c52d41949fd256cd4e0f01ae9254ec4a7bc5e3fe
sha256 eae10596d229b17d6d1e3023d32f65e3e4ee67e4c177864e919bb40555222368
sha512 1dd47bbc4271367de089fffb76f50bc87f41fce3895f85e84657c8d6022903067392bce73119eb9800025721a0433c041b42cf616992dc7a0dc6a7507da1b1e5
ripemd-160 043f4021fad1a8f61f006c79bdc340c18d17987e

81129843 as geometric shapes

Circle

Radius = n
Diameter 162259686
Circumference 509753837.51139
Area 2.0678124402973E+16

Sphere

Radius = n
Volume 2.2368173151302E+24
Surface area 8.2712497611893E+16
Circumference 509753837.51139

Square

Length = n
Perimeter 324519372
Area 6582051425204649
Diagonal 114734924.2838

Cube

Length = n
Surface area 39492308551227894
Volume 5.3400079874478E+23
Space diagonal 140521010.08609

Equilateral Triangle

Length = n
Perimeter 243389529
Area 2.8501118716214E+15
Altitude 70260505.043043

Triangular Pyramid

Length = n
Surface area 2.8501118716214E+15
Volume 6.2932597658578E+22
Height 38244974.761267