81255984 (number)

81255984 is an even 8-digits composite number following 81255983 and preceding 81255985. In scientific notation, it is written as 8.1255984 × 10^7. The sum of its digits is 42. It has a total of 7 prime factors and 40 positive divisors. There are 26940480 positive integers (up to 81255984) that are relatively prime to 81255984.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred fifty-five thousand nine hundred eighty-four

Notation

Scientific notation 8.1255984 × 10^7
Engineering notation 8.1255984 × 10^6

Prime Factorization of 81255984

Prime Factorization 2 × 2 × 2 × 2 × 3 × 191 × 8863

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10156998
Product of the distinct prime numbers

The prime factorization of 81255984 is 2 × 2 × 2 × 2 × 3 × 191 × 8863. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81255984)

Multiplication

n×y
n×2 162511968
n×3 243767952
n×4 325023936
n×5 406279920

Division

n÷y
n÷2 40627992
n÷3 27085328
n÷3 20313996
n÷5 16251196.8

Exponentiation

ny
n2 6602534935808256
n3 5.3649547310348E+23
n4 4.3593467578569E+31
n5 3.5422301040687E+39

Nth Root

y√n
2√n 9014.210115146
3√n 433.13018538339
4√n 94.943194148638
5√n 38.191882962404

Divisors of 81255984

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81255983
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81255984 can be divided by 40 positive divisors. The sum of these divisors (counting 81255984) is 1, the average is 0.025.

Base conversion 81255984

Base System Value
2 Binary 100110101111101111000110000
3 Ternary 12122220020020220
4 Quaternary 10311331320300
5 Quinary 131300142414
6 Senary 12021333040
8 Octal 465757060
10 Decimal 81255984
12 Duodecimal 23267180
16 Hexadecimal 4d7de30
20 Vigesimal 157gjj4
36 Base36 1cdlio

Cryptographic Hash Functions

md5 4d277d37673c0592649abc54ae657b3c
sha1 9e50623295f021c158630fd853a07148ce6bdfc3
sha256 ccb91d8ea3cd8774ccac1479fb0d7fb1913ef4ea3888f8b3cc7243665834b62a
sha512 b20dc7e8998c5cf9dc265d78cf4e02c17a0af608cb10eed1fd2230da4ebe1cec632aa7c10fdaac6ddde9cf859d22bc25d021709e9a371b14defbe21c0185b098
ripemd-160 bc3eb52e79fa7fcb1e905cacdfc86571b20f90c1

81255984 as geometric shapes

Circle

Radius = n
Diameter 162511968
Circumference 510546404.78922
Area 2.0742475249405E+16

Sphere

Radius = n
Volume 2.2472669826481E+24
Surface area 8.2969900997621E+16
Circumference 510546404.78922

Square

Length = n
Perimeter 325023936
Area 6602534935808256
Diagonal 114913314.59677

Cube

Length = n
Surface area 39615209614849536
Volume 5.3649547310348E+23
Space diagonal 140739492.707

Equilateral Triangle

Length = n
Perimeter 243767952
Area 2.8589814918921E+15
Altitude 70369746.353502

Triangular Pyramid

Length = n
Surface area 2.8589814918921E+15
Volume 6.3226597851226E+22
Height 38304438.198924