81488655 (number)

81488655 is an odd 8-digits composite number following 81488654 and preceding 81488656. In scientific notation, it is written as 8.1488655 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 40582080 positive integers (up to 81488655) that are relatively prime to 81488655.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-eight thousand six hundred fifty-five

Notation

Scientific notation 8.1488655 × 10^7
Engineering notation 8.1488655 × 10^6

Prime Factorization of 81488655

Prime Factorization 23 × 15 × 3 × 43 × 1831

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81488655
Product of the distinct prime numbers

The prime factorization of 81488655 is 23 × 15 × 3 × 43 × 1831. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 2, 69, 2, 259, 856, 4965, 4359, 87554, 27223, 707318, 535485, 2098291, 7650407, 95542439, 62364926, 746314617, 645744921, 4035886366, 4796948128

Basic calculations (n = 81488655)

Multiplication

n×y
n×2 162977310
n×3 244465965
n×4 325954620
n×5 407443275

Division

n÷y
n÷2 40744327.5
n÷3 27162885
n÷3 20372163.75
n÷5 16297731

Exponentiation

ny
n2 6640400893709025
n3 5.4111733748915E+23
n4 4.4094924029172E+31
n5 3.5932360514644E+39

Nth Root

y√n
2√n 9027.1066793298
3√n 433.54320438795
4√n 95.011087138974
5√n 38.213729927186

Divisors of 81488655

1, 3, 15, 23, 43, 45, 69, 129, 345, 645, 989, 1035, 1831, 1935, 2967, 5493, 14835, 27465, 42113, 44505, 78733, 82395, 126339, 236199, 631695, 1180995, 1810859, 1895085, 3542985, 5432577, 27162885, 81488655

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81488654
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81488655 can be divided by 32 positive divisors. The sum of these divisors (counting 81488655) is 1, the average is 0.03125.

Base conversion 81488655

Base System Value
2 Binary 100110110110110101100001111
3 Ternary 12200100001102100
4 Quaternary 10312312230033
5 Quinary 131330114110
6 Senary 12030330143
8 Octal 466665417
10 Decimal 81488655
12 Duodecimal 23359953
16 Hexadecimal 4db6b0f
20 Vigesimal 15961cf
36 Base36 1cil1r

Cryptographic Hash Functions

md5 c08150ab8ed15b8ac1ce6b9c9340ec6b
sha1 53488da5a2612e513f801ed2f38eafce72078ce6
sha256 5a4727630cd3deebcb294ec81c491650613d5b1459de704cd0d18c37926153bc
sha512 856583299f8de6ab99f1454e636dbdb93838f0473aacf13d4aa6776a422f04633ffcb0eab91d0d7b0afe7dd32bd09abd7dbc65b8bfccd00dacb20ab86ec97e67
ripemd-160 a1d7fd1078b245bd0ea9e95ada424bd75c7cbeb6

81488655 as geometric shapes

Circle

Radius = n
Diameter 162977310
Circumference 512008319.79783
Area 2.0861434664567E+16

Sphere

Radius = n
Volume 2.2666270029146E+24
Surface area 8.3445738658269E+16
Circumference 512008319.79783

Square

Length = n
Perimeter 325954620
Area 6640400893709025
Diagonal 115242361.08054

Cube

Length = n
Surface area 39842405362254150
Volume 5.4111733748915E+23
Space diagonal 141142490.70045

Equilateral Triangle

Length = n
Perimeter 244465965
Area 2.8753779326325E+15
Altitude 70571245.350226

Triangular Pyramid

Length = n
Surface area 2.8753779326325E+15
Volume 6.3771289792698E+22
Height 38414120.360181