20781290 (number)

20781290 is an even 8-digits composite number following 20781289 and preceding 20781291. In scientific notation, it is written as 2.0781290 × 10^7. The sum of its digits is 29. It has a total of 4 prime factors and 16 positive divisors. There are 8290560 positive integers (up to 20781290) that are relatively prime to 20781290.

Interesting facts

Basic properties

Name

Name twenty million seven hundred eighty-one thousand two hundred ninety

Notation

Scientific notation 2.0781290 × 10^7
Engineering notation 2.0781290 × 10^6

Prime Factorization of 20781290

Prime Factorization 2 × 5 × 409 × 5081

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20781290
Product of the distinct prime numbers

The prime factorization of 20781290 is 2 × 5 × 409 × 5081. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 5, 43, 3, 794, 782, 4788, 9091, 19904, 36564, 509699, 446318, 3738618, 3167135, 98412475, 66653861, 134693693, 66530394, 7474527704, 7905198659

Basic calculations (n = 20781290)

Multiplication

n×y
n×2 41562580
n×3 62343870
n×4 83125160
n×5 103906450

Division

n÷y
n÷2 10390645
n÷3 6927096.6666667
n÷3 5195322.5
n÷5 4156258

Exponentiation

ny
n2 431862014064100
n3 8.9746497542501E+21
n4 1.865047991915E+29
n5 3.8758103183903E+36

Nth Root

y√n
2√n 4558.6500194685
3√n 274.93128861836
4√n 67.517775581461
5√n 29.07598931468

Divisors of 20781290

1, 2, 5, 10, 409, 818, 2045, 4090, 5081, 10162, 25405, 50810, 2078129, 4156258, 10390645, 20781290

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 -20781289
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 20781290 can be divided by 16 positive divisors. The sum of these divisors (counting 20781290) is 1, the average is 0.0625.

Base conversion 20781290

Base System Value
2 Binary 1001111010001100011101010
3 Ternary 1110002210120102
4 Quaternary 1033101203222
5 Quinary 20310000130
6 Senary 2021225402
8 Octal 117214352
10 Decimal 20781290
12 Duodecimal 6b62262
16 Hexadecimal 13d18ea
20 Vigesimal 69hd4a
36 Base36 cdey2

Cryptographic Hash Functions

md5 4205d933d3e2b99d7ca64ac6fe951c8f
sha1 acfe430609ae8ca8384a01d31f3fbc870e275916
sha256 1b7713d1c29e3f5654e8a7d0618ccb4ef6f2653fcd40187b26d9debcac8e636e
sha512 1b6207fd2f21d4f2a714fca815bd52a563f5daf02c594fc176c7895e737a99624a63daa2ca52b99f2018b72dae368d18c4eecf7b9595a1e9ec908bd2c5a3627a
ripemd-160 d0b4e9493c2c43d515bc1258255d4a3f32e0495c

20781290 as geometric shapes

Circle

Radius = n
Diameter 41562580
Circumference 130572695.99224
Area 1.3567345307483E+15

Sphere

Radius = n
Volume 3.7592924981992E+22
Surface area 5.4269381229931E+15
Circumference 130572695.99224

Square

Length = n
Perimeter 83125160
Area 431862014064100
Diagonal 29389182.161608

Cube

Length = n
Surface area 2591172084384600
Volume 8.9746497542501E+21
Space diagonal 35994250.126823

Equilateral Triangle

Length = n
Perimeter 62343870
Area 1.8700173755451E+14
Altitude 17997125.063412

Triangular Pyramid

Length = n
Surface area 1.8700173755451E+14
Volume 1.0576726166674E+21
Height 9796394.0538695