20181025 (number)

20181025 is an odd 8-digits composite number following 20181024 and preceding 20181026. In scientific notation, it is written as 2.0181025 × 10^7. The sum of its digits is 19. It has a total of 2 prime factors and 4 positive divisors. There are 16144800 positive integers (up to 20181025) that are relatively prime to 20181025.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0181025 × 10^7
Engineering notation 2.0181025 × 10^6

Prime Factorization of 20181025

Prime Factorization 25 × 807241

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20181025
Product of the distinct prime numbers

The prime factorization of 20181025 is 25 × 807241. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 4, 41, 25, 729, 809, 7757, 5215, 19812, 35503, 667833, 10375, 1755439, 2071924, 67066876, 23399431, 299405475, 438304236, 3693166781, 6489887142

Basic calculations (n = 20181025)

Multiplication

n×y
n×2 40362050
n×3 60543075
n×4 80724100
n×5 100905125

Division

n÷y
n÷2 10090512.5
n÷3 6727008.3333333
n÷3 5045256.25
n÷5 4036205

Exponentiation

ny
n2 407273770050625
n3 8.2192021352359E+21
n4 1.6587192377125E+29
n5 3.3474654404257E+36

Nth Root

y√n
2√n 4492.3295738403
3√n 272.25826554697
4√n 67.024842960206
5√n 28.906042979385

Divisors of 20181025

1, 25, 807241, 20181025

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20181024
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20181025 can be divided by 4 positive divisors. The sum of these divisors (counting 20181025) is 1, the average is 0.25.

Base conversion 20181025

Base System Value
2 Binary 1001100111111000000100001
3 Ternary 1101222022011101
4 Quaternary 1030333000201
5 Quinary 20131243100
6 Senary 2000314401
8 Octal 114770041
10 Decimal 20181025
12 Duodecimal 6912a01
16 Hexadecimal 133f021
20 Vigesimal 662cb5
36 Base36 c0js1

Cryptographic Hash Functions

md5 287e67df3407b84c89e24de5f9296630
sha1 867132ecb6f8d0aae8a51aeb58a7575ef54b59f6
sha256 479162545757eca7cb012cba04c3d9816cd7d0ee4a48ca157311330b59cc63f9
sha512 7e5474d967e46b3f3683ae534991e95364cb70aadaa2b91aa4ce24b720b41ad02045ece7ef5487064b0fd6cdf250230852469ead19de9164620b294624191fb6
ripemd-160 9ced81a5623098e72e47a3cccf47c67397b16a26

20181025 as geometric shapes

Circle

Radius = n
Diameter 40362050
Circumference 126801119.76382
Area 1.2794882839909E+15

Sphere

Radius = n
Volume 3.4428513395236E+22
Surface area 5.1179531359634E+15
Circumference 126801119.76382

Square

Length = n
Perimeter 80724100
Area 407273770050625
Diagonal 28540279.25759

Cube

Length = n
Surface area 2443642620303750
Volume 8.2192021352359E+21
Space diagonal 34954560.648818

Equilateral Triangle

Length = n
Perimeter 60543075
Area 1.7635471557945E+14
Altitude 17477280.324409

Triangular Pyramid

Length = n
Surface area 1.7635471557945E+14
Volume 9.6864226096138E+20
Height 9513426.4191968