81109725 (number)

81109725 is an odd 8-digits composite number following 81109724 and preceding 81109726. In scientific notation, it is written as 8.1109725 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 43099200 positive integers (up to 81109725) that are relatively prime to 81109725.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1109725 × 10^7
Engineering notation 8.1109725 × 10^6

Prime Factorization of 81109725

Prime Factorization 15 × 5 × 3691 × 293

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81109725
Product of the distinct prime numbers

The prime factorization of 81109725 is 15 × 5 × 3691 × 293. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 8, 30, 57, 71, 272, 6707, 1164, 48505, 84686, 725276, 479093, 2674820, 1449662, 22455928, 28528201, 192731660, 878268970, 9089473522, 5132359492

Basic calculations (n = 81109725)

Multiplication

n×y
n×2 162219450
n×3 243329175
n×4 324438900
n×5 405548625

Division

n÷y
n÷2 40554862.5
n÷3 27036575
n÷3 20277431.25
n÷5 16221945

Exponentiation

ny
n2 6578787489575625
n3 5.3360364411292E+23
n4 4.3280444832997E+31
n5 3.510464978282E+39

Nth Root

y√n
2√n 9006.0937703313
3√n 432.87015434005
4√n 94.900441360045
5√n 38.178124141236

Divisors of 81109725

1, 5, 15, 75, 293, 1465, 3691, 4395, 18455, 21975, 55365, 276825, 1081463, 5407315, 16221945, 81109725

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 -81109724
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 81109725 can be divided by 16 positive divisors. The sum of these divisors (counting 81109725) is 1, the average is 0.0625.

Base conversion 81109725

Base System Value
2 Binary 100110101011010001011011101
3 Ternary 12122121210121220
4 Quaternary 10311122023131
5 Quinary 131231002400
6 Senary 12014243553
8 Octal 465321335
10 Decimal 81109725
12 Duodecimal 231b65b9
16 Hexadecimal 4d5a2dd
20 Vigesimal 156ie65
36 Base36 1cagnx

Cryptographic Hash Functions

md5 b78fb98a9ce43ceb3813b758ccdf1917
sha1 059616f4c6145d1860b7e40ea95163915f33fa8b
sha256 8688c77e12ff100f194d15113ae76c75413b324c3227e98ce4ee57f80553cf70
sha512 535602d519ec1f062e355d6ef691b3b59adb97cd71b7b07014c08b6e5bbea8004944fa8df1b31b36ec5f9497f1f6b01b967c5f0576dd182524e282bb164805b9
ripemd-160 015c6bd68dc8d415153a2901ffa7a0f5a22fd073

81109725 as geometric shapes

Circle

Radius = n
Diameter 162219450
Circumference 509627432.38938
Area 2.0667870446779E+16

Sphere

Radius = n
Volume 2.2351537176985E+24
Surface area 8.2671481787117E+16
Circumference 509627432.38938

Square

Length = n
Perimeter 324438900
Area 6578787489575625
Diagonal 114706473.13535

Cube

Length = n
Surface area 39472724937453750
Volume 5.3360364411292E+23
Space diagonal 140486164.68794

Equilateral Triangle

Length = n
Perimeter 243329175
Area 2.8486985460359E+15
Altitude 70243082.34397

Triangular Pyramid

Length = n
Surface area 2.8486985460359E+15
Volume 6.288579253635E+22
Height 38235491.045117