21109905 (number)

21109905 is an odd 8-digits composite number following 21109904 and preceding 21109906. In scientific notation, it is written as 2.1109905 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors. There are 11066400 positive integers (up to 21109905) that are relatively prime to 21109905.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1109905 × 10^7
Engineering notation 2.1109905 × 10^6

Prime Factorization of 21109905

Prime Factorization 9 × 5 × 59 × 7951

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21109905
Product of the distinct prime numbers

The prime factorization of 21109905 is 9 × 5 × 59 × 7951. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 9, 31, 24, 393, 381, 5696, 780, 13384, 21624, 274614, 810501, 7953434, 8251474, 60079986, 34227847, 598453547, 995579387, 9481286795, 6131994009

Basic calculations (n = 21109905)

Multiplication

n×y
n×2 42219810
n×3 63329715
n×4 84439620
n×5 105549525

Division

n÷y
n÷2 10554952.5
n÷3 7036635
n÷3 5277476.25
n÷5 4221981

Exponentiation

ny
n2 445628089109025
n3 9.4071666264231E+21
n4 1.9858439380296E+29
n5 4.1920976876631E+36

Nth Root

y√n
2√n 4594.5516647438
3√n 276.37288132149
4√n 67.783122270546
5√n 29.167368985707

Divisors of 21109905

1, 5, 9, 45, 59, 295, 531, 2655, 7951, 39755, 71559, 357795, 469109, 2345545, 4221981, 21109905

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 -21109904
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 21109905 can be divided by 16 positive divisors. The sum of these divisors (counting 21109905) is 1, the average is 0.0625.

Base conversion 21109905

Base System Value
2 Binary 1010000100001110010010001
3 Ternary 1110201111100100
4 Quaternary 1100201302101
5 Quinary 20401004110
6 Senary 2032243013
8 Octal 120416221
10 Decimal 21109905
12 Duodecimal 70a0469
16 Hexadecimal 1421c91
20 Vigesimal 6bief5
36 Base36 ckgi9

Cryptographic Hash Functions

md5 2b44b7d0bdf8f4c639522efdaa36333c
sha1 3584703304eb971afee20e7c080f93d3fc4f485e
sha256 c81c7a879f23224ec8e51241f2d5a020fbdb20c3d894aa9668166c197739b74d
sha512 b08bf272c94327148395d49ccc7ccd824205e7df9675251584fe0483dafe9ea6843765d29994ff7c6001b19049eb4b8cda387d627813501b1533334e78f3bd9c
ripemd-160 824a45283d90a8dcc40b5712b48be4bd3bead586

21109905 as geometric shapes

Circle

Radius = n
Diameter 42219810
Circumference 132637444.93196
Area 1.3999819309782E+15

Sphere

Radius = n
Volume 3.9404647419554E+22
Surface area 5.5999277239127E+15
Circumference 132637444.93196

Square

Length = n
Perimeter 84439620
Area 445628089109025
Diagonal 29853913.951408

Cube

Length = n
Surface area 2673768534654150
Volume 9.4071666264231E+21
Space diagonal 36563428.002952

Equilateral Triangle

Length = n
Perimeter 63329715
Area 1.9296262290417E+14
Altitude 18281714.001476

Triangular Pyramid

Length = n
Surface area 1.9296262290417E+14
Volume 1.1086452188826E+21
Height 9951304.6504692