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

21081385 (number)

21081385 is an odd 8-digits composite number following 21081384 and preceding 21081386. In scientific notation, it is written as 2.1081385 × 10^7. The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors. There are 15567744 positive integers (up to 21081385) that are relatively prime to 21081385.

Interesting facts

21081385 has 8 divisors, whose sum is 27243720
The reverse of 21081385 is 58318012
Previous prime number is 13

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	twenty-one million eighty-one thousand three hundred eighty-five

Notation

Scientific notation	2.1081385 × 10^7
Engineering notation	2.1081385 × 10^6

Prime Factorization of 21081385

Prime Factorization 5 × 13 × 324329

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21081385	Product of the distinct prime numbers

The prime factorization of 21081385 is 5 × 13 × 324329. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 6, 33, 9, 917, 718, 8537, 606, 90730, 1900, 146708, 198759, 9655574, 5936020, 41908349, 79324073, 689093048, 657344218, 4265175604, 8419833990

Basic calculations (n = 21081385)

Multiplication

n×y

n×2	42162770
n×3	63244155
n×4	84325540
n×5	105406925

Division

n÷y

n÷2	10540692.5
n÷3	7027128.3333333
n÷3	5270346.25
n÷5	4216277

Exponentiation

n^y

n²	444424793518225
n³	9.3690901757032E+21
n⁴	1.9751339709372E+29
n⁵	4.1638559667905E+36

Nth Root

^y√n

²√n	4591.4469396912
³√n	276.24836304593
⁴√n	67.760216496785
⁵√n	29.159483556853

Divisors of 21081385

1, 5, 13, 65, 324329, 1621645, 4216277, 21081385

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	-21081384	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 21081385 can be divided by 8 positive divisors. The sum of these divisors (counting 21081385) is 1, the average is 0.125.

Base conversion 21081385

Base	System	Value
2	Binary	1010000011010110100101001
3	Ternary	1110200001020001
4	Quaternary	1100122310221
5	Quinary	20344101020
6	Senary	2031503001
8	Octal	120326451
10	Decimal	21081385
12	Duodecimal	7087a61
16	Hexadecimal	141ad29
20	Vigesimal	6bf395
36	Base36	cjui1

Cryptographic Hash Functions

md5	f31128236cd6818cad07d7990231fbba
sha1	e0063be5352e26af2d257cc057b4e2e31fba41ed
sha256	14fd54b8bb6884ce5ff3e9e55e81634dd282ca9fb24f62fc8477ac079b16301d
sha512	7b3c04bc5422dabd3123cd3448557f1fd9b016fc6947a2b8e63d1162beeb03b37a6bda95bd5b643ae6de22e26e13763dec1f8c61696b23fab31b436af57ae614
ripemd-160	a892dccc974d9ec35e1b198f8487b2619a029c87

21081385 as geometric shapes

Circle

Radius = n

Diameter	42162770
Circumference	132458248.487
Area	1.39620166639E+15

Sphere

Radius = n

Volume	3.9245153155746E+22
Surface area	5.5848066655601E+15
Circumference	132458248.487

Square

Length = n

Perimeter	84325540
Area	444424793518225
Diagonal	29813580.580609

Cube

Length = n

Surface area	2666548761109350
Volume	9.3690901757032E+21
Space diagonal	36514029.91392

Equilateral Triangle

Length = n

Perimeter	63244155
Area	1.9244158062922E+14
Altitude	18257014.95696

Triangular Pyramid

Length = n

Surface area	1.9244158062922E+14
Volume	1.1041578661313E+21
Height	9937860.1935362