81295428 (number)

81295428 is an even 8-digits composite number following 81295427 and preceding 81295429. In scientific notation, it is written as 8.1295428 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 96 positive divisors. There are 24440832 positive integers (up to 81295428) that are relatively prime to 81295428.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-five thousand four hundred twenty-eight

Notation

Scientific notation 8.1295428 × 10^7
Engineering notation 8.1295428 × 10^6

Prime Factorization of 81295428

Prime Factorization 2 × 2 × 3 × 17 × 53 × 103 × 73

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 40647714
Product of the distinct prime numbers

The prime factorization of 81295428 is 2 × 2 × 3 × 17 × 53 × 103 × 73. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81295428)

Multiplication

n×y
n×2 162590856
n×3 243886284
n×4 325181712
n×5 406477140

Division

n÷y
n÷2 40647714
n÷3 27098476
n÷3 20323857
n÷5 16259085.6

Exponentiation

ny
n2 6608946613703184
n3 5.3727714359015E+23
n4 4.3678175342779E+31
n5 3.5508359587502E+39

Nth Root

y√n
2√n 9016.3977285832
3√n 433.20025867735
4√n 94.954714093526
5√n 38.195590131118

Divisors of 81295428

96 divisors

τ Total Divisors 96
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81295427
Sum of the proper positive divisors of n
A Arithmetic Mean 0.010416666666667
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 96
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81295428 can be divided by 96 positive divisors. The sum of these divisors (counting 81295428) is 1, the average is 0.010416666666667.

Base conversion 81295428

Base System Value
2 Binary 100110110000111100001000100
3 Ternary 12122222020100210
4 Quaternary 10312013201010
5 Quinary 131302423203
6 Senary 12022235420
8 Octal 466074104
10 Decimal 81295428
12 Duodecimal 23285b70
16 Hexadecimal 4d87844
20 Vigesimal 1581ib8
36 Base36 1cefyc

Cryptographic Hash Functions

md5 7a27e9d30cca7f863995f112ff445362
sha1 27b8e8acda3d48e75cd8c9848e341ebd9995e645
sha256 30c913ae230d5c5b7c1ef9bb660830f3f3b8c8ff60108c8683c16aca2c4181a7
sha512 d5ce21029af909fd2cb0bff72ebe6d4cf5d11ffc3c9cbe4640362ee1b8ab06196aedc150082aef5de1b610aaae861f9b4abcaf714cde783c44e3ce0ac0defedb
ripemd-160 d9b342e7df8a33c1de17878146de37be90354d3d

81295428 as geometric shapes

Circle

Radius = n
Diameter 162590856
Circumference 510794238.75048
Area 2.0762618129577E+16

Sphere

Radius = n
Volume 2.250541236326E+24
Surface area 8.3050472518308E+16
Circumference 510794238.75048

Square

Length = n
Perimeter 325181712
Area 6608946613703184
Diagonal 114969096.83653

Cube

Length = n
Surface area 39653679682219104
Volume 5.3727714359015E+23
Space diagonal 140807811.71906

Equilateral Triangle

Length = n
Perimeter 243886284
Area 2.861757829861E+15
Altitude 70403905.859529

Triangular Pyramid

Length = n
Surface area 2.861757829861E+15
Volume 6.3318718601522E+22
Height 38323032.278842