81365512 (number)

81365512 is an even 8-digits composite number following 81365511 and preceding 81365513. In scientific notation, it is written as 8.1365512 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 16 positive divisors. There are 40649040 positive integers (up to 81365512) that are relatively prime to 81365512.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1365512 × 10^7
Engineering notation 8.1365512 × 10^6

Prime Factorization of 81365512

Prime Factorization 2 × 2 × 2 × 1459 × 6971

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20341378
Product of the distinct prime numbers

The prime factorization of 81365512 is 2 × 2 × 2 × 1459 × 6971. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 2, 3, 66, 935, 917, 2412, 4234, 32563, 58964, 258390, 665876, 2833807, 3880961, 80926694, 35254265, 343572165, 332824389, 7255795090, 1607477972

Basic calculations (n = 81365512)

Multiplication

n×y
n×2 162731024
n×3 244096536
n×4 325462048
n×5 406827560

Division

n÷y
n÷2 40682756
n÷3 27121837.333333
n÷3 20341378
n÷5 16273102.4

Exponentiation

ny
n2 6620346543022144
n3 5.3866788609043E+23
n4 4.3828988349705E+31
n5 3.5661680775158E+39

Nth Root

y√n
2√n 9020.2833658372
3√n 433.32470883558
4√n 94.975172365399
5√n 38.202173470895

Divisors of 81365512

1, 2, 4, 8, 1459, 2918, 5836, 6971, 11672, 13942, 27884, 55768, 10170689, 20341378, 40682756, 81365512

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 -81365511
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 81365512 can be divided by 16 positive divisors. The sum of these divisors (counting 81365512) is 1, the average is 0.0625.

Base conversion 81365512

Base System Value
2 Binary 100110110011000101000001000
3 Ternary 12200002210111111
4 Quaternary 10312120220020
5 Quinary 131312144022
6 Senary 12023540104
8 Octal 466305010
10 Decimal 81365512
12 Duodecimal 232ba634
16 Hexadecimal 4d98a08
20 Vigesimal 158adfc
36 Base36 1cfy14

Cryptographic Hash Functions

md5 9b6395104825a102c594172eb3922d26
sha1 ac1e7001882e849571d11f100a42a5ba314e0533
sha256 bc6adcfedd1ed0ff2663aaf35dee3108209b1d330cd3b886cba9837330dd3bf1
sha512 5c87f4425ef5da7362471f4545dde176cf5e60e2064b80baa8682b5c1c235b3e154768a61361bd1f8a71394ae1496f046cb273069c5a4e14b94399e5fd8441c5
ripemd-160 2ce91ef45cf5322437dd89c542f9c88ecd3fef40

81365512 as geometric shapes

Circle

Radius = n
Diameter 162731024
Circumference 511234589.50954
Area 2.0798432063777E+16

Sphere

Radius = n
Volume 2.2563667648886E+24
Surface area 8.3193728255108E+16
Circumference 511234589.50954

Square

Length = n
Perimeter 325462048
Area 6620346543022144
Diagonal 115068210.57983

Cube

Length = n
Surface area 39722079258132864
Volume 5.3866788609043E+23
Space diagonal 140929200.76786

Equilateral Triangle

Length = n
Perimeter 244096536
Area 2.8666941440568E+15
Altitude 70464600.383928

Triangular Pyramid

Length = n
Surface area 2.8666941440568E+15
Volume 6.3482619176994E+22
Height 38356070.193277