81497279 (number)

81497279 is an odd 8-digits composite number following 81497278 and preceding 81497280. In scientific notation, it is written as 8.1497279 × 10^7. The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors. There are 77576800 positive integers (up to 81497279) that are relatively prime to 81497279.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-seven thousand two hundred seventy-nine

Notation

Scientific notation 8.1497279 × 10^7
Engineering notation 8.1497279 × 10^6

Prime Factorization of 81497279

Prime Factorization 71 × 29 × 39581

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81497279
Product of the distinct prime numbers

The prime factorization of 81497279 is 71 × 29 × 39581. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81497279)

Multiplication

n×y
n×2 162994558
n×3 244491837
n×4 325989116
n×5 407486395

Division

n÷y
n÷2 40748639.5
n÷3 27165759.666667
n÷3 20374319.75
n÷5 16299455.8

Exponentiation

ny
n2 6641806484403841
n3 5.4128915612347E+23
n4 4.4113593376269E+31
n5 3.5951378270783E+39

Nth Root

y√n
2√n 9027.5843391242
3√n 433.55849790624
4√n 95.013600811274
5√n 38.214538729975

Divisors of 81497279

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 -81497278
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 81497279 can be divided by 8 positive divisors. The sum of these divisors (counting 81497279) is 1, the average is 0.125.

Base conversion 81497279

Base System Value
2 Binary 100110110111000110010111111
3 Ternary 12200100111020202
4 Quaternary 10312320302333
5 Quinary 131330403104
6 Senary 12030434115
8 Octal 466706277
10 Decimal 81497279
12 Duodecimal 2336293b
16 Hexadecimal 4db8cbf
20 Vigesimal 159733j
36 Base36 1cirpb

Cryptographic Hash Functions

md5 3d347e94fc2f5855e906298cb2a08e4f
sha1 bf49dafe6999ac5a12eeffa7e9a9c183912150e7
sha256 82c2f4dbb8270b1358c2977ab5f24f070c4cdbe91e5b1de47f525a0e9aff52cc
sha512 735f4c1b996999979828fc0444069dd75d82bcbb6b3621a22ff7f577db1f1a48551a83b37cee570f0b26751bb793d5b7026ee75bcf81b36edc3bf5b302a3dbb1
ripemd-160 fb7f7e880031b6993dfcf52f19e2c705b5b9fea1

81497279 as geometric shapes

Circle

Radius = n
Diameter 162994558
Circumference 512062505.98792
Area 2.0865850457968E+16

Sphere

Radius = n
Volume 2.2673467151271E+24
Surface area 8.3463401831873E+16
Circumference 512062505.98792

Square

Length = n
Perimeter 325989116
Area 6641806484403841
Diagonal 115254557.2583

Cube

Length = n
Surface area 39850838906423046
Volume 5.4128915612347E+23
Space diagonal 141157427.90662

Equilateral Triangle

Length = n
Perimeter 244491837
Area 2.875986571257E+15
Altitude 70578713.953308

Triangular Pyramid

Length = n
Surface area 2.875986571257E+15
Volume 6.3791538812941E+22
Height 38418185.752768