20806640 (number)

20806640 is an even 8-digits composite number following 20806639 and preceding 20806641. In scientific notation, it is written as 2.0806640 × 10^7. The sum of its digits is 26. It has a total of 7 prime factors and 40 positive divisors. There are 7832576 positive integers (up to 20806640) that are relatively prime to 20806640.

Interesting facts

Basic properties

Name

Name twenty million eight hundred six thousand six hundred forty

Notation

Scientific notation 2.0806640 × 10^7
Engineering notation 2.0806640 × 10^6

Prime Factorization of 20806640

Prime Factorization 2 × 2 × 2 × 2 × 5 × 17 × 15299

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2600830
Product of the distinct prime numbers

The prime factorization of 20806640 is 2 × 2 × 2 × 2 × 5 × 17 × 15299. Since it has a total of 7 prime factors.

Most popular turbo-numbers

7, 3, 100, 80, 582, 917, 7596, 7342, 32492, 19262, 537858, 430637, 1649891, 484737, 58399212, 11182493, 825170327, 450397118, 2286452501, 7980831535

Basic calculations (n = 20806640)

Multiplication

n×y
n×2 41613280
n×3 62419920
n×4 83226560
n×5 104033200

Division

n÷y
n÷2 10403320
n÷3 6935546.6666667
n÷3 5201660
n÷5 4161328

Exponentiation

ny
n2 432916268089600
n3 9.0075329402838E+21
n4 1.8741649517663E+29
n5 3.8995075452018E+36

Nth Root

y√n
2√n 4561.4296004652
3√n 275.04303458751
4√n 67.538356512912
5√n 29.083079509215

Divisors of 20806640

1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15299, 30598, 61196, 76495, 122392, 152990, 244784, 260083, 305980, 520166, 611960, 1040332, 1223920, 1300415, 2080664, 2600830, 4161328, 5201660, 10403320, 20806640

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20806639
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20806640 can be divided by 40 positive divisors. The sum of these divisors (counting 20806640) is 1, the average is 0.025.

Base conversion 20806640

Base System Value
2 Binary 1001111010111101111110000
3 Ternary 1110011002100022
4 Quaternary 1033113233300
5 Quinary 20311303030
6 Senary 2021543012
8 Octal 117275760
10 Decimal 20806640
12 Duodecimal 6b74a68
16 Hexadecimal 13d7bf0
20 Vigesimal 6a0gc0
36 Base36 cdyi8

Cryptographic Hash Functions

md5 aca28bf52d802befaf604a848575203f
sha1 61419dd086d84566ca4d77904da3fc644987f4a3
sha256 03836142ce883d8c47cf218cd8db7d4e355f89d5f91bd381760169c0b4f23bcf
sha512 a54536e3a3c0ba45825df170e336f161b1cde137f64ac830e42bdf739b2348f064fddda76bd4f92331960ed50451c40bab727c26da46f164721d5f1d6fb3c3ad
ripemd-160 01574b04e64f0e8a7d6ba316229a9c75e7ed4582

20806640 as geometric shapes

Circle

Radius = n
Diameter 41613280
Circumference 130731974.73978
Area 1.3600465674498E+15

Sphere

Radius = n
Volume 3.7730665749552E+22
Surface area 5.4401862697992E+15
Circumference 130731974.73978

Square

Length = n
Perimeter 83226560
Area 432916268089600
Diagonal 29425032.475415

Cube

Length = n
Surface area 2597497608537600
Volume 9.0075329402838E+21
Space diagonal 36038157.614795

Equilateral Triangle

Length = n
Perimeter 62419920
Area 1.8745824293857E+14
Altitude 18019078.807397

Triangular Pyramid

Length = n
Surface area 1.8745824293857E+14
Volume 1.061547937306E+21
Height 9808344.1584715