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

21121805 (number)

21121805 is an odd 8-digits composite number following 21121804 and preceding 21121806. In scientific notation, it is written as 2.1121805 × 10^7. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 16897440 positive integers (up to 21121805) that are relatively prime to 21121805.

Interesting facts

21121805 has 4 divisors, whose sum is 25346172
The reverse of 21121805 is 50812112
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2

Name

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

Notation

Scientific notation	2.1121805 × 10^7
Engineering notation	2.1121805 × 10^6

Prime Factorization of 21121805

Prime Factorization 5 × 4224361

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21121805	Product of the distinct prime numbers

The prime factorization of 21121805 is 5 × 4224361. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 4, 62, 75, 569, 168, 6465, 4771, 63845, 96332, 581359, 897781, 885552, 8043459, 75646250, 71799292, 465285245, 614295168, 1071790034, 6204367774

Basic calculations (n = 21121805)

Multiplication

n×y

n×2	42243610
n×3	63365415
n×4	84487220
n×5	105609025

Division

n÷y

n÷2	10560902.5
n÷3	7040601.6666667
n÷3	5280451.25
n÷5	4224361

Exponentiation

n^y

n²	446130646458025
n³	9.4230845190103E+21
n⁴	1.9903255370906E+29
n⁵	4.2039267880947E+36

Nth Root

^y√n

²√n	4595.8464943903
³√n	276.424803543
⁴√n	67.792672866545
⁵√n	29.170656669407

Divisors of 21121805

1, 5, 4224361, 21121805

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21121804	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21121805 can be divided by 4 positive divisors. The sum of these divisors (counting 21121805) is 1, the average is 0.25.

Base conversion 21121805

Base	System	Value
2	Binary	1010000100100101100001101
3	Ternary	1110202002200002
4	Quaternary	1100210230031
5	Quinary	20401344210
6	Senary	2032414045
8	Octal	120445415
10	Decimal	21121805
12	Duodecimal	70a7325
16	Hexadecimal	1424b0d
20	Vigesimal	6c04a5
36	Base36	ckpot

Cryptographic Hash Functions

md5	bfde150a276d974f187b4d9f68af4b0e
sha1	6c188aebac72c11e141bc2438a25946a698a440f
sha256	978d595f2b84831c42cbf86c311d1e036bba04d4bea9ba3f7638ac4c08d8c555
sha512	9398b08d8db37544d80d1d5ecbd8da762c12c374bcea1a1cb0f184d8457a9fc285274b244062c089a4c18b5ee1b881ff54b29d7a830209a6b98a9cf07b6372be
ripemd-160	c5536932eb4043dd92e99b2e8270465d1a1ec182

21121805 as geometric shapes

Circle

Radius = n

Diameter	42243610
Circumference	132712214.83711
Area	1.4015607614538E+15

Sphere

Radius = n

Volume	3.9471324132105E+22
Surface area	5.6062430458152E+15
Circumference	132712214.83711

Square

Length = n

Perimeter	84487220
Area	446130646458025
Diagonal	29870743.0928

Cube

Length = n

Surface area	2676783878748150
Volume	9.4230845190103E+21
Space diagonal	36584039.407562

Equilateral Triangle

Length = n

Perimeter	63365415
Area	1.9318023661971E+14
Altitude	18292019.703781

Triangular Pyramid

Length = n

Surface area	1.9318023661971E+14
Volume	1.1105211605144E+21
Height	9956914.3642666