20128731 (number)

20128731 is an odd 8-digits composite number following 20128730 and preceding 20128732. In scientific notation, it is written as 2.0128731 × 10^7. The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors. There are 10825344 positive integers (up to 20128731) that are relatively prime to 20128731.

Interesting facts

Basic properties

Name

Name twenty million one hundred twenty-eight thousand seven hundred thirty-one

Notation

Scientific notation 2.0128731 × 10^7
Engineering notation 2.0128731 × 10^6

Prime Factorization of 20128731

Prime Factorization 3 × 7 × 17 × 56383

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20128731
Product of the distinct prime numbers

The prime factorization of 20128731 is 3 × 7 × 17 × 56383. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 1, 87, 45, 916, 159, 5367, 9182, 61484, 8269, 486020, 445439, 6033758, 67102, 63445654, 40651225, 202146972, 603157215, 2179126415, 6960495405

Basic calculations (n = 20128731)

Multiplication

n×y
n×2 40257462
n×3 60386193
n×4 80514924
n×5 100643655

Division

n÷y
n÷2 10064365.5
n÷3 6709577
n÷3 5032182.75
n÷5 4025746.2

Exponentiation

ny
n2 405165811670361
n3 8.1554736335094E+21
n4 1.641593349465E+29
n5 3.304319094277E+36

Nth Root

y√n
2√n 4486.5054329623
3√n 272.0228994201
4√n 66.981381241075
5√n 28.89104689434

Divisors of 20128731

1, 3, 7, 17, 21, 51, 119, 357, 56383, 169149, 394681, 958511, 1184043, 2875533, 6709577, 20128731

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 -20128730
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 20128731 can be divided by 16 positive divisors. The sum of these divisors (counting 20128731) is 1, the average is 0.0625.

Base conversion 20128731

Base System Value
2 Binary 1001100110010001111011011
3 Ternary 1101212122102120
4 Quaternary 1030302033123
5 Quinary 20123104411
6 Senary 1555232323
8 Octal 114621733
10 Decimal 20128731
12 Duodecimal 68a86a3
16 Hexadecimal 13323db
20 Vigesimal 65g1gb
36 Base36 bzfff

Cryptographic Hash Functions

md5 4996fdf522fb072634cc9bd3057c767d
sha1 a33f27508f75a8bedb5e52661dc33c22123345db
sha256 9e965bd1c92872e0ddcc740529290cca912423f01a1f0ffeeb434ac5fb56d071
sha512 ae8b726af8a189b07d53409a8c692ea9347b89248699ec09b48b1254220709281b9ade1d248f54e49895e3ef988367e90660c3cc8ef2275bba60cde3bb44142d
ripemd-160 f5d07eb4257c167ba7de2fe8136f4563b8cfb205

20128731 as geometric shapes

Circle

Radius = n
Diameter 40257462
Circumference 126472546.87137
Area 1.2728659374294E+15

Sphere

Radius = n
Volume 3.4161568071438E+22
Surface area 5.0914637497174E+15
Circumference 126472546.87137

Square

Length = n
Perimeter 80514924
Area 405165811670361
Diagonal 28466324.37356

Cube

Length = n
Surface area 2430994870022166
Volume 8.1554736335094E+21
Space diagonal 34863984.783887

Equilateral Triangle

Length = n
Perimeter 60386193
Area 1.7544194282574E+14
Altitude 17431992.391943

Triangular Pyramid

Length = n
Surface area 1.7544194282574E+14
Volume 9.6113178500709E+20
Height 9488774.7911866