20809728 (number)

20809728 is an even 8-digits composite number following 20809727 and preceding 20809729. In scientific notation, it is written as 2.0809728 × 10^7. The sum of its digits is 36. It has a total of 13 prime factors and 48 positive divisors. There are 6930432 positive integers (up to 20809728) that are relatively prime to 20809728.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0809728 × 10^7
Engineering notation 2.0809728 × 10^6

Prime Factorization of 20809728

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 9 × 1129

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 13
Total number of prime factors
rad Radical 20322
Product of the distinct prime numbers

The prime factorization of 20809728 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 9 × 1129. Since it has a total of 13 prime factors.

Most popular turbo-numbers

Basic calculations (n = 20809728)

Multiplication

n×y
n×2 41619456
n×3 62429184
n×4 83238912
n×5 104048640

Division

n÷y
n÷2 10404864
n÷3 6936576
n÷3 5202432
n÷5 4161945.6

Exponentiation

ny
n2 433044779433984
n3 9.0115440718412E+21
n4 1.8752778099503E+29
n5 3.9024021149501E+36

Nth Root

y√n
2√n 4561.7680782784
3√n 275.05664067474
4√n 67.540862285571
5√n 29.083942726135

Divisors of 20809728

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20809727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20809728 can be divided by 48 positive divisors. The sum of these divisors (counting 20809728) is 1, the average is 0.020833333333333.

Base conversion 20809728

Base System Value
2 Binary 1001111011000100000000000
3 Ternary 1110011020120200
4 Quaternary 1033120200000
5 Quinary 20311402403
6 Senary 2022005200
8 Octal 117304000
10 Decimal 20809728
12 Duodecimal 6b76800
16 Hexadecimal 13d8800
20 Vigesimal 6a1468
36 Base36 ce0w0

Cryptographic Hash Functions

md5 9b12176bd79ce7f7fd3f9d79d0f707c9
sha1 c2e9d8f54360b389a72246a40cf585ac98eb3757
sha256 c80b7d745add2449d8cea9209e08e528d21b5db95a8d0318efff49d98733cad7
sha512 339ea9a9688598f48a1a7f403df7c40839f02231ab727cd92423ae9786f8a8d9dba80e5f789bc2d8a374e86a17bc699287cf1c07d620153b0ddb68344b363282
ripemd-160 26a92164b7b1b893986ec3de326df8fc0fa12b7d

20809728 as geometric shapes

Circle

Radius = n
Diameter 41619456
Circumference 130751377.216
Area 1.3604502977452E+15

Sphere

Radius = n
Volume 3.7747467538129E+22
Surface area 5.4418011909809E+15
Circumference 130751377.216

Square

Length = n
Perimeter 83238912
Area 433044779433984
Diagonal 29429399.566895

Cube

Length = n
Surface area 2598268676603904
Volume 9.0115440718412E+21
Space diagonal 36043506.187689

Equilateral Triangle

Length = n
Perimeter 62429184
Area 1.8751388998303E+14
Altitude 18021753.093844

Triangular Pyramid

Length = n
Surface area 1.8751388998303E+14
Volume 1.0620206536934E+21
Height 9809799.8556317