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

21081810 (number)

21081810 is an even 8-digits composite number following 21081809 and preceding 21081811. In scientific notation, it is written as 2.1081810 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 5515328 positive integers (up to 21081810) that are relatively prime to 21081810.

Interesting facts

21081810 has 16 divisors, whose sum is 34369920
The reverse of 21081810 is 01818012
Previous prime number is 53

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 21
Digital Root 3

Name

Name	twenty-one million eighty-one thousand eight hundred ten

Notation

Scientific notation	2.1081810 × 10^7
Engineering notation	2.1081810 × 10^6

Prime Factorization of 21081810

Prime Factorization 2 × 15 × 53 × 13259

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	21081810	Product of the distinct prime numbers

The prime factorization of 21081810 is 2 × 15 × 53 × 13259. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 6, 99, 81, 273, 40, 4816, 3051, 41345, 35194, 91527, 415659, 7250920, 4286757, 92101551, 35978229, 26989745, 985892572, 8161198053, 8684076774

Basic calculations (n = 21081810)

Multiplication

n×y

n×2	42163620
n×3	63245430
n×4	84327240
n×5	105409050

Division

n÷y

n÷2	10540905
n÷3	7027270
n÷3	5270452.5
n÷5	4216362

Exponentiation

n^y

n²	444442712876100
n³	9.3696568287385E+21
n⁴	1.9752932502867E+29
n⁵	4.1642756996826E+36

Nth Root

^y√n

²√n	4591.4932211645
³√n	276.2502194193
⁴√n	67.760558005115
⁵√n	29.159601126743

Divisors of 21081810

1, 2, 15, 30, 53, 106, 795, 1590, 13259, 26518, 198885, 397770, 702727, 1405454, 10540905, 21081810

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	-21081809	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 21081810 can be divided by 16 positive divisors. The sum of these divisors (counting 21081810) is 1, the average is 0.0625.

Base conversion 21081810

Base	System	Value
2	Binary	1010000011010111011010010
3	Ternary	1110200001210210
4	Quaternary	1100122323102
5	Quinary	20344104220
6	Senary	2031504550
8	Octal	120327322
10	Decimal	21081810
12	Duodecimal	7088156
16	Hexadecimal	141aed2
20	Vigesimal	6bf4aa
36	Base36	cjutu

Cryptographic Hash Functions

md5	82b3d149fd852494e2189f86b7b8340e
sha1	f10bdc7283238646f2134aee4a49f7ae056e32dc
sha256	82761d704cd927b61a4fb8df03197f0fb64444909de666d63f8ac9de72f92e0c
sha512	6d11480023d7aa318320e7948a61156b881c87c97bd94044150d3805e2b2fcce636ac399e3a4c8c8f0e7ff8409aaf03ba8ec0c1dff300d7c90d7a0772914843a
ripemd-160	f7b3f38e28e88e50424f5b49d9c5f7d97eef2a46

21081810 as geometric shapes

Circle

Radius = n

Diameter	42163620
Circumference	132460918.84075
Area	1.3962579617131E+15

Sphere

Radius = n

Volume	3.924752674643E+22
Surface area	5.5850318468523E+15
Circumference	132460918.84075

Square

Length = n

Perimeter	84327240
Area	444442712876100
Diagonal	29814181.621373

Cube

Length = n

Surface area	2666656277256600
Volume	9.3696568287385E+21
Space diagonal	36514766.035514

Equilateral Triangle

Length = n

Perimeter	63245430
Area	1.9244933993879E+14
Altitude	18257383.017757

Triangular Pyramid

Length = n

Surface area	1.9244933993879E+14
Volume	1.104224646832E+21
Height	9938060.5404576