81279660 (number)

81279660 is an even 8-digits composite number following 81279659 and preceding 81279661. In scientific notation, it is written as 8.1279660 × 10^7. The sum of its digits is 39. It has a total of 6 prime factors and 48 positive divisors. There are 16588800 positive integers (up to 81279660) that are relatively prime to 81279660.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred seventy-nine thousand six hundred sixty

Notation

Scientific notation 8.1279660 × 10^7
Engineering notation 8.1279660 × 10^6

Prime Factorization of 81279660

Prime Factorization 2 × 2 × 165 × 7 × 241 × 73

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40639830
Product of the distinct prime numbers

The prime factorization of 81279660 is 2 × 2 × 165 × 7 × 241 × 73. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81279660)

Multiplication

n×y
n×2 162559320
n×3 243838980
n×4 325118640
n×5 406398300

Division

n÷y
n÷2 40639830
n÷3 27093220
n÷3 20319915
n÷5 16255932

Exponentiation

ny
n2 6606383129715600
n3 5.3696457461302E+23
n4 4.3644298056591E+31
n5 3.5473937069784E+39

Nth Root

y√n
2√n 9015.5232793222
3√n 433.17224913438
4√n 94.950109422381
5√n 38.194108338571

Divisors of 81279660

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81279659
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81279660 can be divided by 48 positive divisors. The sum of these divisors (counting 81279660) is 1, the average is 0.020833333333333.

Base conversion 81279660

Base System Value
2 Binary 100110110000011101010101100
3 Ternary 12122221102201210
4 Quaternary 10312003222230
5 Quinary 131301422120
6 Senary 12022034420
8 Octal 466035254
10 Decimal 81279660
12 Duodecimal 23278a10
16 Hexadecimal 4d83aac
20 Vigesimal 157jj30
36 Base36 1ce3sc

Cryptographic Hash Functions

md5 85ca385f19d1d02a4c06c42474f400ec
sha1 2082496463f937d24e01988fc966e093cbd908bf
sha256 6c55b4de0ae03b268cc3daed61b5e5380882ffb39a61cb6cfa880473b3d9292f
sha512 3ae4768467c81a6ee4038d6c4a7f8f380c7c343ba58faf4cafc3c48d4874fce8cf51fdff789eacc5acdcfd4521029bc5625e85b2caf0e85c17e6b165ece8a77a
ripemd-160 8e907d46a4c56e99c7d948fd0f989fcfd62e22d8

81279660 as geometric shapes

Circle

Radius = n
Diameter 162559320
Circumference 510695165.48455
Area 2.0754564707114E+16

Sphere

Radius = n
Volume 2.2492319504563E+24
Surface area 8.3018258828456E+16
Circumference 510695165.48455

Square

Length = n
Perimeter 325118640
Area 6606383129715600
Diagonal 114946797.51707

Cube

Length = n
Surface area 39638298778293600
Volume 5.3696457461302E+23
Space diagonal 140780500.74192

Equilateral Triangle

Length = n
Perimeter 243838980
Area 2.8606478087333E+15
Altitude 70390250.370962

Triangular Pyramid

Length = n
Surface area 2.8606478087333E+15
Volume 6.3281881994303E+22
Height 38315599.172358