81569968 (number)

81569968 is an even 8-digits composite number following 81569967 and preceding 81569969. In scientific notation, it is written as 8.1569968 × 10^7. The sum of its digits is 52. It has a total of 7 prime factors and 40 positive divisors. There are 39067392 positive integers (up to 81569968) that are relatively prime to 81569968.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred sixty-nine thousand nine hundred sixty-eight

Notation

Scientific notation 8.1569968 × 10^7
Engineering notation 8.1569968 × 10^6

Prime Factorization of 81569968

Prime Factorization 2 × 2 × 2 × 2 × 53 × 43 × 2237

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10196246
Product of the distinct prime numbers

The prime factorization of 81569968 is 2 × 2 × 2 × 2 × 53 × 43 × 2237. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81569968)

Multiplication

n×y
n×2 163139936
n×3 244709904
n×4 326279872
n×5 407849840

Division

n÷y
n÷2 40784984
n÷3 27189989.333333
n÷3 20392492
n÷5 16313993.6

Exponentiation

ny
n2 6653659679521024
n3 5.4273880714142E+23
n4 4.4271187130884E+31
n5 3.6111993175882E+39

Nth Root

y√n
2√n 9031.6093803928
3√n 433.68735934017
4√n 95.03477984608
5√n 38.221353156539

Divisors of 81569968

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81569967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81569968 can be divided by 40 positive divisors. The sum of these divisors (counting 81569968) is 1, the average is 0.025.

Base conversion 81569968

Base System Value
2 Binary 100110111001010100010110000
3 Ternary 12200111011221221
4 Quaternary 10313022202300
5 Quinary 131340214333
6 Senary 12032154424
8 Octal 467124260
10 Decimal 81569968
12 Duodecimal 23398a14
16 Hexadecimal 4dca8b0
20 Vigesimal 159g4i8
36 Base36 1ckbsg

Cryptographic Hash Functions

md5 714d4f56dbcb2c742e3a8531c4db6d89
sha1 79fe8a2bda418d268530dece503ebee5e1db73ba
sha256 e23032636a1d5997a84675f78cb9123c88e2d7abc0c486e01325d4ff3ffc6f80
sha512 69211b8981a93ddb361c663a0f94cf483bb85afa96cec7ec6e517c72858c6c94bec18a75504270b225626000bfbdd005e235e8a08b5d90c3066234042900dd5b
ripemd-160 41aef721419b69a10e2c824c93564aeef55b136b

81569968 as geometric shapes

Circle

Radius = n
Diameter 163139936
Circumference 512519224.44471
Area 2.090308836867E+16

Sphere

Radius = n
Volume 2.2734189991114E+24
Surface area 8.3612353474679E+16
Circumference 512519224.44471

Square

Length = n
Perimeter 326279872
Area 6653659679521024
Diagonal 115357355.02794

Cube

Length = n
Surface area 39921958077126144
Volume 5.4273880714142E+23
Space diagonal 141283328.94777

Equilateral Triangle

Length = n
Perimeter 244709904
Area 2.8811191553007E+15
Altitude 70641664.473884

Triangular Pyramid

Length = n
Surface area 2.8811191553007E+15
Volume 6.3962381823799E+22
Height 38452451.67598