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

21909821 (number)

21909821 is an odd 8-digits composite number following 21909820 and preceding 21909822. In scientific notation, it is written as 2.1909821 × 10^7. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 20487168 positive integers (up to 21909821) that are relatively prime to 21909821.

Interesting facts

21909821 has 8 divisors, whose sum is 23349240
The reverse of 21909821 is 12890912
Previous prime number is 157

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5

Name

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

Notation

Scientific notation	2.1909821 × 10^7
Engineering notation	2.1909821 × 10^6

Prime Factorization of 21909821

Prime Factorization 17 × 157 × 8209

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21909821	Product of the distinct prime numbers

The prime factorization of 21909821 is 17 × 157 × 8209. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 8, 13, 70, 920, 113, 7145, 1172, 73314, 27145, 949532, 258692, 7957611, 3935082, 83898485, 30555229, 56808554, 525350281, 4126143981, 4939729460

Basic calculations (n = 21909821)

Multiplication

n×y

n×2	43819642
n×3	65729463
n×4	87639284
n×5	109549105

Division

n÷y

n÷2	10954910.5
n÷3	7303273.6666667
n÷3	5477455.25
n÷5	4381964.2

Exponentiation

n^y

n²	480040256252041
n³	1.0517596087276E+22
n⁴	2.3043864762253E+29
n⁵	5.0488695208916E+36

Nth Root

^y√n

²√n	4680.7927747338
³√n	279.8205525366
⁴√n	68.416319505903
⁵√n	29.385140116417

Divisors of 21909821

1, 17, 157, 2669, 8209, 139553, 1288813, 21909821

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21909820	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21909821 can be divided by 8 positive divisors. The sum of these divisors (counting 21909821) is 1, the average is 0.125.

Base conversion 21909821

Base	System	Value
2	Binary	1010011100101000100111101
3	Ternary	1112020010121212
4	Quaternary	1103211010331
5	Quinary	21102103241
6	Senary	2101334205
8	Octal	123450475
10	Decimal	21909821
12	Duodecimal	7407365
16	Hexadecimal	14e513d
20	Vigesimal	6gieb1
36	Base36	d1lq5

Cryptographic Hash Functions

md5	71e5188502fcd1aea30d46d924b85b1b
sha1	2ce217092f84e817eff87fa541238eff6ef0ffe3
sha256	d051c4b503ac369691e301d066da3085a114f8c779a35ea057726fe5fe85d68f
sha512	e6417d9b8f4597fae488bfc74c11da9f9275911f0788ee85c103621576577bfeff6b133e25248eef3856e68a462514cebd7df1840a37ef7a274f699cf5f89bf3
ripemd-160	d8089a6bdc96aef6ca7ffed244753948e3dcfed0

21909821 as geometric shapes

Circle

Radius = n

Diameter	43819642
Circumference	137663465.39013
Area	1.5080909424688E+15

Sphere

Radius = n

Volume	4.4056003468283E+22
Surface area	6.0323637698751E+15
Circumference	137663465.39013

Square

Length = n

Perimeter	87639284
Area	480040256252041
Diagonal	30985166.007367

Cube

Length = n

Surface area	2880241537512246
Volume	1.0517596087276E+22
Space diagonal	37948923.15674

Equilateral Triangle

Length = n

Perimeter	65729463
Area	2.0786352837673E+14
Altitude	18974461.57837

Triangular Pyramid

Length = n

Surface area	2.0786352837673E+14
Volume	1.239510585849E+21
Height	10328388.669122