81725918 (number)

81725918 is an even 8-digits composite number following 81725917 and preceding 81725919. In scientific notation, it is written as 8.1725918 × 10^7. The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors. There are 40612104 positive integers (up to 81725918) that are relatively prime to 81725918.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred twenty-five thousand nine hundred eighteen

Notation

Scientific notation 8.1725918 × 10^7
Engineering notation 8.1725918 × 10^6

Prime Factorization of 81725918

Prime Factorization 2 × 163 × 250693

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81725918
Product of the distinct prime numbers

The prime factorization of 81725918 is 2 × 163 × 250693. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81725918)

Multiplication

n×y
n×2 163451836
n×3 245177754
n×4 326903672
n×5 408629590

Division

n÷y
n÷2 40862959
n÷3 27241972.666667
n÷3 20431479.5
n÷5 16345183.6

Exponentiation

ny
n2 6679125672942724
n3 5.4585767705861E+23
n4 4.4610719754963E+31
n5 3.6458520246151E+39

Nth Root

y√n
2√n 9040.2388242789
3√n 433.96356592785
4√n 95.080170510359
5√n 38.235956734436

Divisors of 81725918

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81725917
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81725918 can be divided by 8 positive divisors. The sum of these divisors (counting 81725918) is 1, the average is 0.125.

Base conversion 81725918

Base System Value
2 Binary 100110111110000100111011110
3 Ternary 12200210002212212
4 Quaternary 10313300213132
5 Quinary 131410212133
6 Senary 12035400422
8 Octal 467604736
10 Decimal 81725918
12 Duodecimal 23453112
16 Hexadecimal 4df09de
20 Vigesimal 15afefi
36 Base36 1cno4e

Cryptographic Hash Functions

md5 eea4ff44fca835e4769febfae5bd4901
sha1 c3cbc8b1a70bfb7858abc22bc180a0dd225bb62f
sha256 b01a41beae9c89242d9b9bda907e7b8a48b58970aee1a7dbbeeefb23ac5c0983
sha512 7a56f73a876ef9a68e192ef7552f8cdd6ae29772188dbc68b5747b358c16af95e6f122c224df0f060cf62eaa2ce1c2a4f6e8a4cd7c0696d13711e307fec11740
ripemd-160 c012aff0b7000feb7ff1f0897c02f31781799d95

81725918 as geometric shapes

Circle

Radius = n
Diameter 163451836
Circumference 513499087.19336
Area 2.098309214652E+16

Sphere

Radius = n
Volume 2.2864832908706E+24
Surface area 8.3932368586079E+16
Circumference 513499087.19336

Square

Length = n
Perimeter 326903672
Area 6679125672942724
Diagonal 115577901.63299

Cube

Length = n
Surface area 40074754037656344
Volume 5.4585767705861E+23
Space diagonal 141553442.27121

Equilateral Triangle

Length = n
Perimeter 245177754
Area 2.8921462539186E+15
Altitude 70776721.135604

Triangular Pyramid

Length = n
Surface area 2.8921462539186E+15
Volume 6.432994416848E+22
Height 38525967.210997