81508725 (number)

81508725 is an odd 8-digits composite number following 81508724 and preceding 81508726. In scientific notation, it is written as 8.1508725 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 43223040 positive integers (up to 81508725) that are relatively prime to 81508725.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eight thousand seven hundred twenty-five

Notation

Scientific notation 8.1508725 × 10^7
Engineering notation 8.1508725 × 10^6

Prime Factorization of 81508725

Prime Factorization 9 × 25 × 193 × 1877

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81508725
Product of the distinct prime numbers

The prime factorization of 81508725 is 9 × 25 × 193 × 1877. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 8, 60, 44, 744, 469, 4418, 1791, 48161, 90299, 832081, 10392, 2869815, 5961195, 61624404, 89182350, 936897556, 481982349, 4916025056, 966571623

Basic calculations (n = 81508725)

Multiplication

n×y
n×2 163017450
n×3 244526175
n×4 326034900
n×5 407543625

Division

n÷y
n÷2 40754362.5
n÷3 27169575
n÷3 20377181.25
n÷5 16301745

Exponentiation

ny
n2 6643672251125625
n3 5.4151725450713E+23
n4 4.4138380980377E+31
n5 3.5976631572747E+39

Nth Root

y√n
2√n 9028.2182627582
3√n 433.57879420048
4√n 95.016936715294
5√n 38.215612088607

Divisors of 81508725

1, 9, 25, 193, 225, 1737, 1877, 4825, 16893, 43425, 46925, 362261, 422325, 3260349, 9056525, 81508725

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81508724
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81508725 can be divided by 16 positive divisors. The sum of these divisors (counting 81508725) is 1, the average is 0.0625.

Base conversion 81508725

Base System Value
2 Binary 100110110111011100101110101
3 Ternary 12200101001221200
4 Quaternary 10312323211311
5 Quinary 131331234400
6 Senary 12031003113
8 Octal 466734565
10 Decimal 81508725
12 Duodecimal 23369499
16 Hexadecimal 4dbb975
20 Vigesimal 1598bg5
36 Base36 1cj0j9

Cryptographic Hash Functions

md5 3838eacccfb52af2471c058718e2c05d
sha1 c8b1f34dc7fcb472b5078aa85c17855ea6d17f21
sha256 bbae46e9824bbf73f9e13319d12be781a4af14cedfc3f967b04ec2b9704b37a9
sha512 e0686a6f67d4b61ae24d704ffbed0dcb99a6641250d6d414d060d476a13703864d06a45b78bbd06243bba058395d41012c07ee9960cb9077ac422b8f0bce8ba0
ripemd-160 f6b29c72e84c54bb533c8a991c6b6a72835e6b14

81508725 as geometric shapes

Circle

Radius = n
Diameter 163017450
Circumference 512134423.32694
Area 2.0871711936995E+16

Sphere

Radius = n
Volume 2.2683021714023E+24
Surface area 8.3486847747979E+16
Circumference 512134423.32694

Square

Length = n
Perimeter 326034900
Area 6643672251125625
Diagonal 115270744.34674

Cube

Length = n
Surface area 39862033506753750
Volume 5.4151725450713E+23
Space diagonal 141177252.96016

Equilateral Triangle

Length = n
Perimeter 244526175
Area 2.8767944719463E+15
Altitude 70588626.48008

Triangular Pyramid

Length = n
Surface area 2.8767944719463E+15
Volume 6.3818420465252E+22
Height 38423581.448913