81188520 (number)

81188520 is an even 8-digits composite number following 81188519 and preceding 81188521. In scientific notation, it is written as 8.1188520 × 10^7. The sum of its digits is 33. It has a total of 7 prime factors and 64 positive divisors. There are 17577216 positive integers (up to 81188520) that are relatively prime to 81188520.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred eighty-eight thousand five hundred twenty

Notation

Scientific notation 8.1188520 × 10^7
Engineering notation 8.1188520 × 10^6

Prime Factorization of 81188520

Prime Factorization 2 × 2 × 2 × 21 × 5 × 19 × 5087

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20297130
Product of the distinct prime numbers

The prime factorization of 81188520 is 2 × 2 × 2 × 21 × 5 × 19 × 5087. Since it has a total of 7 prime factors.

Most popular turbo-numbers

4, 8, 9, 30, 651, 840, 3002, 2514, 56126, 86972, 282032, 493047, 4045908, 5123977, 6328463, 57710441, 510589689, 198553160, 6256234596, 5052102854

Basic calculations (n = 81188520)

Multiplication

n×y
n×2 162377040
n×3 243565560
n×4 324754080
n×5 405942600

Division

n÷y
n÷2 40594260
n÷3 27062840
n÷3 20297130
n÷5 16237704

Exponentiation

ny
n2 6591575779790400
n3 5.3516028202903E+23
n4 4.3448871260719E+31
n5 3.5275495533283E+39

Nth Root

y√n
2√n 9010.4672464862
3√n 433.01028124795
4√n 94.923481006999
5√n 38.185538978395

Divisors of 81188520

1, 2, 4, 5, 8, 10, 19, 20, 21, 38, 40, 42, 76, 84, 95, 105, 152, 168, 190, 210, 380, 399, 420, 760, 798, 840, 1596, 1995, 3192, 3990, 5087, 7980, 10174, 15960, 20348, 25435, 40696, 50870, 96653, 101740, 106827, 193306, 203480, 213654, 386612, 427308, 483265, 534135, 773224, 854616, 966530, 1068270, 1933060, 2029713, 2136540, 3866120, 4059426, 4273080, 8118852, 10148565, 16237704, 20297130, 40594260, 81188520

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81188519
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81188520 can be divided by 64 positive divisors. The sum of these divisors (counting 81188520) is 1, the average is 0.015625.

Base conversion 81188520

Base System Value
2 Binary 100110101101101011010101000
3 Ternary 12122202210201020
4 Quaternary 10311231122220
5 Quinary 131241013040
6 Senary 12020052440
8 Octal 465553250
10 Decimal 81188520
12 Duodecimal 23234120
16 Hexadecimal 4d6d6a8
20 Vigesimal 1578b60
36 Base36 1cc5go

Cryptographic Hash Functions

md5 f73e8214342ed8e7c529c930f7c57f02
sha1 c232ba4af0ad958874fa92785f041f159e6b983c
sha256 99c6a0d14823d3c592e413d4f3d7d27128531b086365bdb88b66f12fb463dfe0
sha512 f1b2dce3b75623ed3ad654e8167c77591f41d66e165c79b170c305b9709217cb49de4e34c29898db0ba1f346d8271b7a125d02112258ce82f363be5d517d1bed
ripemd-160 8699b30c617359e113e2274d4093bd9e0311bf83

81188520 as geometric shapes

Circle

Radius = n
Diameter 162377040
Circumference 510122515.97566
Area 2.070804604537E+16

Sphere

Radius = n
Volume 2.2416741473539E+24
Surface area 8.283218418148E+16
Circumference 510122515.97566

Square

Length = n
Perimeter 324754080
Area 6591575779790400
Diagonal 114817906.093

Cube

Length = n
Surface area 39549454678742400
Volume 5.3516028202903E+23
Space diagonal 140622641.63132

Equilateral Triangle

Length = n
Perimeter 243565560
Area 2.8542360381344E+15
Altitude 70311320.815661

Triangular Pyramid

Length = n
Surface area 2.8542360381344E+15
Volume 6.3069244074072E+22
Height 38272635.364333