81665612 (number)

81665612 is an even 8-digits composite number following 81665611 and preceding 81665613. In scientific notation, it is written as 8.1665612 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 12 positive divisors. There are 34999536 positive integers (up to 81665612) that are relatively prime to 81665612.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty-five thousand six hundred twelve

Notation

Scientific notation 8.1665612 × 10^7
Engineering notation 8.1665612 × 10^6

Prime Factorization of 81665612

Prime Factorization 2 × 2 × 7 × 2916629

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40832806
Product of the distinct prime numbers

The prime factorization of 81665612 is 2 × 2 × 7 × 2916629. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 8, 4, 60, 692, 81, 7381, 4683, 272, 2465, 499545, 213812, 8359504, 3553133, 82409258, 96972215, 160342016, 833313059, 1722158880, 7845583406

Basic calculations (n = 81665612)

Multiplication

n×y
n×2 163331224
n×3 244996836
n×4 326662448
n×5 408328060

Division

n÷y
n÷2 40832806
n÷3 27221870.666667
n÷3 20416403
n÷5 16333122.4

Exponentiation

ny
n2 6669272183334544
n3 5.4465019444659E+23
n4 4.44791914554E+31
n5 3.6324203914704E+39

Nth Root

y√n
2√n 9036.9027880132
3√n 433.85679830247
4√n 95.062625610769
5√n 38.230312163983

Divisors of 81665612

1, 2, 4, 7, 14, 28, 2916629, 5833258, 11666516, 20416403, 40832806, 81665612

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81665611
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81665612 can be divided by 12 positive divisors. The sum of these divisors (counting 81665612) is 1, the average is 0.083333333333333.

Base conversion 81665612

Base System Value
2 Binary 100110111100001111001001100
3 Ternary 12200200001011022
4 Quaternary 10313201321030
5 Quinary 131401244422
6 Senary 12034213312
8 Octal 467417114
10 Decimal 81665612
12 Duodecimal 23424238
16 Hexadecimal 4de1e4c
20 Vigesimal 15a840c
36 Base36 1cmdl8

Cryptographic Hash Functions

md5 925716ec976e7aef1bf6ee34bc796a99
sha1 89d44af1404f23f8480882ca2f0cd8b3a7f5eada
sha256 47794081f905aae13d4e0162911ceb9e3193be604547a4a1c871e6491c86eb82
sha512 d85b5193a6f18ce4850d079085e07c36edea222a960f49b4ab2de46071b08aa947d611d208b5a1dbb36f4dcdaa793f07c671e97c0f08440161a6d0e6dacf048b
ripemd-160 1c6b436de75f5cdf45b82ea2e5eb42a89aa747e4

81665612 as geometric shapes

Circle

Radius = n
Diameter 163331224
Circumference 513120173.42023
Area 2.0952136495955E+16

Sphere

Radius = n
Volume 2.2814253995329E+24
Surface area 8.3808545983818E+16
Circumference 513120173.42023

Square

Length = n
Perimeter 326662448
Area 6669272183334544
Diagonal 115492616.0699

Cube

Length = n
Surface area 40015633100007264
Volume 5.4465019444659E+23
Space diagonal 141448989.21521

Equilateral Triangle

Length = n
Perimeter 244996836
Area 2.8878795677603E+15
Altitude 70724494.607603

Triangular Pyramid

Length = n
Surface area 2.8878795677603E+15
Volume 6.4187640977959E+22
Height 38497538.689966