20128945 (number)

20128945 is an odd 8-digits composite number following 20128944 and preceding 20128946. In scientific notation, it is written as 2.0128945 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 15624000 positive integers (up to 20128945) that are relatively prime to 20128945.

Interesting facts

Basic properties

Name

Name twenty million one hundred twenty-eight thousand nine hundred forty-five

Notation

Scientific notation 2.0128945 × 10^7
Engineering notation 2.0128945 × 10^6

Prime Factorization of 20128945

Prime Factorization 5 × 373 × 43 × 251

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20128945
Product of the distinct prime numbers

The prime factorization of 20128945 is 5 × 373 × 43 × 251. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 5, 90, 22, 479, 832, 6260, 6464, 73252, 21566, 702157, 676876, 2348008, 9056497, 75780581, 46169594, 332576429, 338377680, 9530042602, 7723420300

Basic calculations (n = 20128945)

Multiplication

n×y
n×2 40257890
n×3 60386835
n×4 80515780
n×5 100644725

Division

n÷y
n÷2 10064472.5
n÷3 6709648.3333333
n÷3 5032236.25
n÷5 4025789

Exponentiation

ny
n2 405174426813025
n3 8.1557337527259E+21
n4 1.6416631614326E+29
n5 3.3044947485004E+36

Nth Root

y√n
2√n 4486.5292821958
3√n 272.0238634268
4√n 66.981559269666
5√n 28.891108325513

Divisors of 20128945

1, 5, 43, 215, 251, 373, 1255, 1865, 10793, 16039, 53965, 80195, 93623, 468115, 4025789, 20128945

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 -20128944
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 20128945 can be divided by 16 positive divisors. The sum of these divisors (counting 20128945) is 1, the average is 0.0625.

Base conversion 20128945

Base System Value
2 Binary 1001100110010010010110001
3 Ternary 1101212122201111
4 Quaternary 1030302102301
5 Quinary 20123111240
6 Senary 1555233321
8 Octal 114622261
10 Decimal 20128945
12 Duodecimal 68a8841
16 Hexadecimal 13324b1
20 Vigesimal 65g275
36 Base36 bzfld

Cryptographic Hash Functions

md5 dee962f15c9e76cc5c5eb106e4305d74
sha1 0c25a17803dd1d4a331e1831f0b50b00ef017fca
sha256 cb2c8bb99935444dc98d7ac6928c6e3ccae894883598204bed4d2f5fb4eaca68
sha512 2279f1b1604da71f70b38ba8ccdede6232806526e449db93a462fb84b1f09c83e906e230f97006934d0ebbe4207837f28f6f1fc08548475360964c51c78abbfd
ripemd-160 3b259d98b3a02e7db52307e778a634f949b9c49e

20128945 as geometric shapes

Circle

Radius = n
Diameter 40257890
Circumference 126473891.47303
Area 1.2728930026983E+15

Sphere

Radius = n
Volume 3.4162657656264E+22
Surface area 5.091572010793E+15
Circumference 126473891.47303

Square

Length = n
Perimeter 80515780
Area 405174426813025
Diagonal 28466627.015262

Cube

Length = n
Surface area 2431046560878150
Volume 8.1557337527259E+21
Space diagonal 34864355.44276

Equilateral Triangle

Length = n
Perimeter 60386835
Area 1.7544567329194E+14
Altitude 17432177.72138

Triangular Pyramid

Length = n
Surface area 1.7544567329194E+14
Volume 9.6116244035075E+20
Height 9488875.671754