20805989 (number)

20805989 is an odd 8-digits prime number following 20805988 and preceding 20805990. In scientific notation, it is written as 2.0805989 × 10^7. The sum of its digits is 41. It has a total of 1 prime factors and 2 positive divisors. There are 20805988 positive integers (up to 20805989) that are relatively prime to 20805989.

Interesting facts

Basic properties

Name

Name twenty million eight hundred five thousand nine hundred eighty-nine

Notation

Scientific notation 2.0805989 × 10^7
Engineering notation 2.0805989 × 10^6

Prime Factorization of 20805989

Prime Factorization 20805989

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 20805989
Product of the distinct prime numbers

The prime factorization of 20805989 is 20805989. Since it has a total of 1 prime factors.

Most popular turbo-numbers

10, 3, 61, 15, 172, 284, 7823, 9598, 53080, 32623, 670276, 762043, 5313088, 8400153, 6164512, 55749479, 728759223, 144764968, 8559628737, 3078376491

Basic calculations (n = 20805989)

Multiplication

n×y
n×2 41611978
n×3 62417967
n×4 83223956
n×5 104029945

Division

n÷y
n÷2 10402994.5
n÷3 6935329.6666667
n÷3 5201497.25
n÷5 4161197.8

Exponentiation

ny
n2 432889178268121
n3 9.0066874812656E+21
n4 1.8739304066165E+29
n5 3.8988975426828E+36

Nth Root

y√n
2√n 4561.3582406998
3√n 275.04016603396
4√n 67.537828220189
5√n 29.082897516142

Divisors of 20805989

1, 20805989

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 20805990
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10402995
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4561.3583503163
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999038738
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20805989 can be divided by 2 positive divisors. The sum of these divisors (counting 20805989) is 20805990, the average is 10402995.

Base conversion 20805989

Base System Value
2 Binary 1001111010111100101100101
3 Ternary 1110011001110012
4 Quaternary 1033113211211
5 Quinary 20311242424
6 Senary 2021540005
8 Octal 117274545
10 Decimal 20805989
12 Duodecimal 6b74605
16 Hexadecimal 13d7965
20 Vigesimal 6a0ej9
36 Base36 cdy05

Cryptographic Hash Functions

md5 409144cdae7af39e6508653d5f97ed6a
sha1 490d6a71562e8d9f92672b88a8da71a224a467f1
sha256 74c3f0a6fe2563b70180462b82acbac60994d5006097610571a76a7e25443f9d
sha512 fff9c9431a876fffa4e7d79c97c039b1318fe556943482e7e26753615ce366db755b89bf9635c5e0ff1ea3471c32888d5db58234f92444bb88694a08ce4c620f
ripemd-160 d386fa6adb5c65c685ef868ecbb76156c21f1128

20805989 as geometric shapes

Circle

Radius = n
Diameter 41611978
Circumference 130727884.38614
Area 1.3599614622657E+15

Sphere

Radius = n
Volume 3.7727124299097E+22
Surface area 5.4398458490626E+15
Circumference 130727884.38614

Square

Length = n
Perimeter 83223956
Area 432889178268121
Diagonal 29424111.822385

Cube

Length = n
Surface area 2597335069608726
Volume 9.0066874812656E+21
Space diagonal 36037030.049719

Equilateral Triangle

Length = n
Perimeter 62417967
Area 1.8744651270178E+14
Altitude 18018515.02486

Triangular Pyramid

Length = n
Surface area 1.8744651270178E+14
Volume 1.0614482990051E+21
Height 9808037.2741285