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

20921209 (number)

20921209 is an odd 8-digits composite number following 20921208 and preceding 20921210. In scientific notation, it is written as 2.0921209 × 10^7. The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors. There are 20151936 positive integers (up to 20921209) that are relatively prime to 20921209.

Interesting facts

20921209 has 8 divisors, whose sum is 21693960
The reverse of 20921209 is 90212902
Previous prime number is 757

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7

Name

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

Notation

Scientific notation	2.0921209 × 10^7
Engineering notation	2.0921209 × 10^6

Prime Factorization of 20921209

Prime Factorization 29 × 757 × 953

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20921209	Product of the distinct prime numbers

The prime factorization of 20921209 is 29 × 757 × 953. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 1, 61, 70, 382, 849, 9453, 9967, 86924, 99894, 211317, 734204, 451120, 6191002, 70774940, 71013262, 109238726, 779835267, 700094300, 4946538301

Basic calculations (n = 20921209)

Multiplication

n×y

n×2	41842418
n×3	62763627
n×4	83684836
n×5	104606045

Division

n÷y

n÷2	10460604.5
n÷3	6973736.3333333
n÷3	5230302.25
n÷5	4184241.8

Exponentiation

n^y

n²	437696986021681
n³	9.1571501232297E+21
n⁴	1.9157865157246E+29
n⁵	4.0080570094857E+36

Nth Root

^y√n

²√n	4573.9708131994
³√n	275.54694013439
⁴√n	67.631137896677
⁵√n	29.115037620289

Divisors of 20921209

1, 29, 757, 953, 21953, 27637, 721421, 20921209

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	-20921208	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 20921209 can be divided by 8 positive divisors. The sum of these divisors (counting 20921209) is 1, the average is 0.125.

Base conversion 20921209

Base	System	Value
2	Binary	1001111110011101101111001
3	Ternary	1110100220111121
4	Quaternary	1033303231321
5	Quinary	20323434314
6	Senary	2024225241
8	Octal	117635571
10	Decimal	20921209
12	Duodecimal	700b221
16	Hexadecimal	13f3b79
20	Vigesimal	6af309
36	Base36	cgewp

Cryptographic Hash Functions

md5	32ca5e4ddfcd004a312f6526a8a3dec3
sha1	7905b9ca5d542d8d240c7adb3022da4edb69a696
sha256	08d1ade358dcc865423cfaf68c9225ea74298f2bc1ccfc2d04eadced26de2fd7
sha512	b8c4d7388200c9dcefce1ae9e948e80f6dde46c2afd7682f1d8af7af970bbac720642b24b3827ae0ef7a8343dd107835c146df5867493d52f6283ae2167e628f
ripemd-160	1fdc7c00a2f9bd31654ade5db5c4ab685f1645b6

20921209 as geometric shapes

Circle

Radius = n

Diameter	41842418
Circumference	131451832.99723
Area	1.3750656357841E+15

Sphere

Radius = n

Volume	3.8357380739943E+22
Surface area	5.5002625431364E+15
Circumference	131451832.99723

Square

Length = n

Perimeter	83684836
Area	437696986021681
Diagonal	29587057.509042

Cube

Length = n

Surface area	2626181916130086
Volume	9.1571501232297E+21
Space diagonal	36236596.943767

Equilateral Triangle

Length = n

Perimeter	62763627
Area	1.8952835452733E+14
Altitude	18118298.471884

Triangular Pyramid

Length = n

Surface area	1.8952835452733E+14
Volume	1.0791804914132E+21
Height	9862352.503014