Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

21388809 (number)

21388809 is an odd 8-digits composite number following 21388808 and preceding 21388810. In scientific notation, it is written as 2.1388809 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 12 positive divisors. There are 13162032 positive integers (up to 21388809) that are relatively prime to 21388809.

Interesting facts

21388809 has 12 divisors, whose sum is 30881616
The reverse of 21388809 is 90888312
Previous prime number is 13

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

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

Notation

Scientific notation	2.1388809 × 10^7
Engineering notation	2.1388809 × 10^6

Prime Factorization of 21388809

Prime Factorization 3 × 13 × 13 × 42187

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	1645293	Product of the distinct prime numbers

The prime factorization of 21388809 is 3 × 13 × 13 × 42187. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 7, 11, 42, 258, 740, 3394, 7471, 93112, 50013, 410073, 257919, 1082943, 2261750, 28981350, 17442640, 273773247, 413717468, 2480311470, 5261330449

Basic calculations (n = 21388809)

Multiplication

n×y

n×2	42777618
n×3	64166427
n×4	85555236
n×5	106944045

Division

n÷y

n÷2	10694404.5
n÷3	7129603
n÷3	5347202.25
n÷5	4277761.8

Exponentiation

n^y

n²	457481150438481
n³	9.7849769478289E+21
n⁴	2.0928900300652E+29
n⁵	4.4764425111068E+36

Nth Root

^y√n

²√n	4624.8036715087
³√n	277.58470589998
⁴√n	68.005909092583
⁵√n	29.244036713693

Divisors of 21388809

1, 3, 13, 39, 169, 507, 42187, 126561, 548431, 1645293, 7129603, 21388809

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21388808	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21388809 can be divided by 12 positive divisors. The sum of these divisors (counting 21388809) is 1, the average is 0.083333333333333.

Base conversion 21388809

Base	System	Value
2	Binary	1010001100101111000001001
3	Ternary	1111020122221010
4	Quaternary	1101211320021
5	Quinary	20433420214
6	Senary	2042234133
8	Octal	121457011
10	Decimal	21388809
12	Duodecimal	71b5949
16	Hexadecimal	1465e09
20	Vigesimal	6ddc09
36	Base36	cqfpl

Cryptographic Hash Functions

md5	78d9e70685407f2aeaf4b8be8edf463e
sha1	b0df9cdbcc1290c88037b3bdb8209b103070f405
sha256	66cdd6d01d3767403a1ddfe901c1c6e3cb147e919003c62fa5d71315ade3d35b
sha512	e3c660a6749054546cc89a8dbfd5534753842d720245c84e94a92d7c474883ac57daffb7962bd2ff0bb2013ab9df0ff31fba1a04bfb459c5a6b541b6433cf5ec
ripemd-160	32dbcd550c2f6dc76bee2fb308888a5088d442a3

21388809 as geometric shapes

Circle

Radius = n

Diameter	42777618
Circumference	134389850.44687
Area	1.4372194213733E+15

Sphere

Radius = n

Volume	4.0987215593126E+22
Surface area	5.7488776854934E+15
Circumference	134389850.44687

Square

Length = n

Perimeter	85555236
Area	457481150438481
Diagonal	30248343.770808

Cube

Length = n

Surface area	2744886902630886
Volume	9.7849769478289E+21
Space diagonal	37046503.901386

Equilateral Triangle

Length = n

Perimeter	64166427
Area	1.9809514901613E+14
Altitude	18523251.950693

Triangular Pyramid

Length = n

Surface area	1.9809514901613E+14
Volume	1.1531705922606E+21
Height	10082781.256936