20809745 (number)

20809745 is an odd 8-digits composite number following 20809744 and preceding 20809746. In scientific notation, it is written as 2.0809745 × 10^7. The sum of its digits is 35. It has a total of 5 prime factors and 24 positive divisors. There are 14716800 positive integers (up to 20809745) that are relatively prime to 20809745.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0809745 × 10^7
Engineering notation 2.0809745 × 10^6

Prime Factorization of 20809745

Prime Factorization 5 × 11 × 73 × 73 × 71

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 285065
Product of the distinct prime numbers

The prime factorization of 20809745 is 5 × 11 × 73 × 73 × 71. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 7, 17, 80, 605, 588, 1742, 5387, 26308, 70412, 626977, 493306, 7570702, 7992070, 43215549, 37263050, 253202525, 642364784, 2422561966, 2771708018

Basic calculations (n = 20809745)

Multiplication

n×y
n×2 41619490
n×3 62429235
n×4 83238980
n×5 104048725

Division

n÷y
n÷2 10404872.5
n÷3 6936581.6666667
n÷3 5202436.25
n÷5 4161949

Exponentiation

ny
n2 433045486965025
n3 9.011566157143E+21
n4 1.8752839378078E+29
n5 3.9024180548375E+36

Nth Root

y√n
2√n 4561.7699415907
3√n 275.05671557499
4√n 67.540876079532
5√n 29.083947478017

Divisors of 20809745

1, 5, 11, 55, 71, 73, 355, 365, 781, 803, 3905, 4015, 5183, 5329, 25915, 26645, 57013, 58619, 285065, 293095, 378359, 1891795, 4161949, 20809745

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 -20809744
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 20809745 can be divided by 24 positive divisors. The sum of these divisors (counting 20809745) is 1, the average is 0.041666666666667.

Base conversion 20809745

Base System Value
2 Binary 1001111011000100000010001
3 Ternary 1110011020121022
4 Quaternary 1033120200101
5 Quinary 20311402440
6 Senary 2022005225
8 Octal 117304021
10 Decimal 20809745
12 Duodecimal 6b76815
16 Hexadecimal 13d8811
20 Vigesimal 6a1475
36 Base36 ce0wh

Cryptographic Hash Functions

md5 32e3e37dd5aa7da15153f28e8ab8fcef
sha1 d9d33f0023370d971b158e7939cdb7fb119a044c
sha256 79f94bb8baacefccae00b9db1b357fb467a308ae645ea9d68365a511e6c9cc02
sha512 83a5d1a5a46414dd46afa12d9b0e73be9294b7d05675b845da65b4a29a4378f009910d60efad6a488754bf67128ae2a708f2fc8e0cc05ae3d8024e508a2f0c7b
ripemd-160 89efee452525ee8b22269bd7819cf03f6f88ced0

20809745 as geometric shapes

Circle

Radius = n
Diameter 41619490
Circumference 130751484.03015
Area 1.3604525205195E+15

Sphere

Radius = n
Volume 3.7747560048825E+22
Surface area 5.4418100820781E+15
Circumference 130751484.03015

Square

Length = n
Perimeter 83238980
Area 433045486965025
Diagonal 29429423.608526

Cube

Length = n
Surface area 2598272921790150
Volume 9.011566157143E+21
Space diagonal 36043535.632552

Equilateral Triangle

Length = n
Perimeter 62429235
Area 1.8751419635296E+14
Altitude 18021767.816276

Triangular Pyramid

Length = n
Surface area 1.8751419635296E+14
Volume 1.0620232564712E+21
Height 9809807.8695086