20809921 (number)

20809921 is an odd 8-digits composite number following 20809920 and preceding 20809922. In scientific notation, it is written as 2.0809921 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 16865280 positive integers (up to 20809921) that are relatively prime to 20809921.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0809921 × 10^7
Engineering notation 2.0809921 × 10^6

Prime Factorization of 20809921

Prime Factorization 17 × 11 × 19 × 5857

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20809921
Product of the distinct prime numbers

The prime factorization of 20809921 is 17 × 11 × 19 × 5857. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 7, 2, 27, 466, 330, 3043, 8799, 37541, 59079, 31537, 313907, 9816373, 958277, 17498437, 18009206, 944349573, 155420721, 1729820378, 2360495987

Basic calculations (n = 20809921)

Multiplication

n×y
n×2 41619842
n×3 62429763
n×4 83239684
n×5 104049605

Division

n÷y
n÷2 10404960.5
n÷3 6936640.3333333
n÷3 5202480.25
n÷5 4161984.2

Exponentiation

ny
n2 433052812026241
n3 9.0117948070939E+21
n4 1.8753473800383E+29
n5 3.9025830826155E+36

Nth Root

y√n
2√n 4561.7892323079
3√n 275.0574910105
4√n 67.541018887102
5√n 29.08399667379

Divisors of 20809921

1, 11, 17, 19, 187, 209, 323, 3553, 5857, 64427, 99569, 111283, 1095259, 1224113, 1891811, 20809921

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20809920
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20809921 can be divided by 16 positive divisors. The sum of these divisors (counting 20809921) is 1, the average is 0.0625.

Base conversion 20809921

Base System Value
2 Binary 1001111011000100011000001
3 Ternary 1110011020211211
4 Quaternary 1033120203001
5 Quinary 20311404141
6 Senary 2022010121
8 Octal 117304301
10 Decimal 20809921
12 Duodecimal 6b76941
16 Hexadecimal 13d88c1
20 Vigesimal 6a14g1
36 Base36 ce11d

Cryptographic Hash Functions

md5 7be0270929c80fade55a2a777bee9ab9
sha1 88eb05233647b659722563dcc9160da7fa4c76e5
sha256 9923a9abfb65367ed1ee37d4df901691311d855ab305aa50d06fd0a29381037c
sha512 68ae5e0812cf73831f87e819ac09e4fb932e2e4c95602154cc2b337f1772f3d0de0148898638e0610bfa33b2cdfc7e188b7755e56fafb7d69d4d6027258304dc
ripemd-160 171b6fdeeec41afa48b11956862cfa76ef7b4fc6

20809921 as geometric shapes

Circle

Radius = n
Diameter 41619842
Circumference 130752589.87077
Area 1.360475532878E+15

Sphere

Radius = n
Volume 3.77485178155E+22
Surface area 5.4419021315122E+15
Circumference 130752589.87077

Square

Length = n
Perimeter 83239684
Area 433052812026241
Diagonal 29429672.510113

Cube

Length = n
Surface area 2598316872157446
Volume 9.0117948070939E+21
Space diagonal 36043840.473495

Equilateral Triangle

Length = n
Perimeter 62429763
Area 1.8751736819751E+14
Altitude 18021920.236747

Triangular Pyramid

Length = n
Surface area 1.8751736819751E+14
Volume 1.0620502031263E+21
Height 9809890.8367042