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

21091381 (number)

21091381 is an odd 8-digits composite number following 21091380 and preceding 21091382. In scientific notation, it is written as 2.1091381 × 10^7. The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors. There are 20364064 positive integers (up to 21091381) that are relatively prime to 21091381.

Interesting facts

21091381 has 4 divisors, whose sum is 21818700
The reverse of 21091381 is 18319012
Previous prime number is 29

Basic properties

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

Name

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

Notation

Scientific notation	2.1091381 × 10^7
Engineering notation	2.1091381 × 10^6

Prime Factorization of 21091381

Prime Factorization 29 × 727289

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21091381	Product of the distinct prime numbers

The prime factorization of 21091381 is 29 × 727289. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 8, 19, 14, 172, 624, 5878, 3330, 20334, 84595, 243444, 522207, 9859558, 9434758, 72915421, 89276090, 17829061, 368783427, 8885972602, 4951802688

Basic calculations (n = 21091381)

Multiplication

n×y

n×2	42182762
n×3	63274143
n×4	84365524
n×5	105456905

Division

n÷y

n÷2	10545690.5
n÷3	7030460.3333333
n÷3	5272845.25
n÷5	4218276.2

Exponentiation

n^y

n²	444846352487161
n³	9.382423906767E+21
n⁴	1.9788827732113E+29
n⁵	4.1737370524136E+36

Nth Root

^y√n

²√n	4592.5353564235
³√n	276.2920183419
⁴√n	67.768247405577
⁵√n	29.16224829864

Divisors of 21091381

1, 29, 727289, 21091381

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	-21091380	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 21091381 can be divided by 4 positive divisors. The sum of these divisors (counting 21091381) is 1, the average is 0.25.

Base conversion 21091381

Base	System	Value
2	Binary	1010000011101010000110101
3	Ternary	1110200112221021
4	Quaternary	1100131100311
5	Quinary	20344411011
6	Senary	2032021141
8	Octal	120352065
10	Decimal	21091381
12	Duodecimal	70917b1
16	Hexadecimal	141d435
20	Vigesimal	6bg891
36	Base36	ck27p

Cryptographic Hash Functions

md5	02674fa4e698646948b06c52349e3cb2
sha1	c43e68b98c7700807105634609b187e17114c1d3
sha256	fc9794bc80d787ac4e752dcfe8213e226dc1dc3d731d8b927839a81370302163
sha512	dbf2bd30aac61b62b219f493f897c20619a96a4c64feff37facb29807aa86b25b4e27370978794f028f545f8631d25b1ea82399c5cf137bfddd6aabee3b514f4
ripemd-160	2d9985ee41470739861084daf471ce181ac89d7b

21091381 as geometric shapes

Circle

Radius = n

Diameter	42182762
Circumference	132521055.20733
Area	1.3975260329499E+15

Sphere

Radius = n

Volume	3.9301005357819E+22
Surface area	5.5901041317995E+15
Circumference	132521055.20733

Square

Length = n

Perimeter	84365524
Area	444846352487161
Diagonal	29827717.059378

Cube

Length = n

Surface area	2669078114922966
Volume	9.382423906767E+21
Space diagonal	36531343.493793

Equilateral Triangle

Length = n

Perimeter	63274143
Area	1.9262412101736E+14
Altitude	18265671.746896

Triangular Pyramid

Length = n

Surface area	1.9262412101736E+14
Volume	1.105729261407E+21
Height	9942572.3531261