20821491 (number)

20821491 is an odd 8-digits composite number following 20821490 and preceding 20821492. In scientific notation, it is written as 2.0821491 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 24 positive divisors. There are 13063680 positive integers (up to 20821491) that are relatively prime to 20821491.

Interesting facts

Basic properties

Name

Name twenty million eight hundred twenty-one thousand four hundred ninety-one

Notation

Scientific notation 2.0821491 × 10^7
Engineering notation 2.0821491 × 10^6

Prime Factorization of 20821491

Prime Factorization 3 × 3 × 31 × 37 × 2017

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 6940497
Product of the distinct prime numbers

The prime factorization of 20821491 is 3 × 3 × 31 × 37 × 2017. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 9, 22, 96, 181, 392, 8143, 9352, 58214, 61390, 113621, 866389, 5901874, 7727779, 31507453, 877395, 296155404, 151684348, 3035147196, 2199341976

Basic calculations (n = 20821491)

Multiplication

n×y
n×2 41642982
n×3 62464473
n×4 83285964
n×5 104107455

Division

n÷y
n÷2 10410745.5
n÷3 6940497
n÷3 5205372.75
n÷5 4164298.2

Exponentiation

ny
n2 433534487463081
n3 9.0268344289022E+21
n4 1.8795215181988E+29
n5 3.9134440375482E+36

Nth Root

y√n
2√n 4563.0571988525
3√n 275.10845749521
4√n 67.550404875563
5√n 29.087230006876

Divisors of 20821491

1, 3, 9, 31, 37, 93, 111, 279, 333, 1147, 2017, 3441, 6051, 10323, 18153, 62527, 74629, 187581, 223887, 562743, 671661, 2313499, 6940497, 20821491

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20821490
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20821491 can be divided by 24 positive divisors. The sum of these divisors (counting 20821491) is 1, the average is 0.041666666666667.

Base conversion 20821491

Base System Value
2 Binary 1001111011011010111110011
3 Ternary 1110011211201100
4 Quaternary 1033123113303
5 Quinary 20312241431
6 Senary 2022135443
8 Octal 117332763
10 Decimal 20821491
12 Duodecimal 6b81583
16 Hexadecimal 13db5f3
20 Vigesimal 6a2deb
36 Base36 ce9yr

Cryptographic Hash Functions

md5 7b02cb8156d2f663cc200f6378b23fd6
sha1 6313d01e3c3f2199001ac035b9d54b88c11ac6c1
sha256 85d507905745ce34d151e932352cbc48f14904ac50b1268804871ae57cec5248
sha512 8f3aa320032411afaa200dd308643fe864d101aec22644abdf6f0f367de25b32665924a274491d6e275b4500e0cbc19a4f650d70fac16b5b0ba5ee6a1b35f695
ripemd-160 5c1cc0489287463ec38d65a6348fe303accf2515

20821491 as geometric shapes

Circle

Radius = n
Diameter 41642982
Circumference 130825286.32477
Area 1.3619887608918E+15

Sphere

Radius = n
Volume 3.7811515636014E+22
Surface area 5.4479550435673E+15
Circumference 130825286.32477

Square

Length = n
Perimeter 83285964
Area 433534487463081
Diagonal 29446034.961029

Cube

Length = n
Surface area 2601206924778486
Volume 9.0268344289022E+21
Space diagonal 36063880.301338

Equilateral Triangle

Length = n
Perimeter 62464473
Area 1.8772593977985E+14
Altitude 18031940.150669

Triangular Pyramid

Length = n
Surface area 1.8772593977985E+14
Volume 1.0638226395542E+21
Height 9815344.9870098