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

21291281 (number)

21291281 is an odd 8-digits composite number following 21291280 and preceding 21291282. In scientific notation, it is written as 2.1291281 × 10^7. The sum of its digits is 26. It has a total of 3 prime factors and 6 positive divisors. There are 19355600 positive integers (up to 21291281) that are relatively prime to 21291281.

Interesting facts

21291281 has 6 divisors, whose sum is 23402946
The reverse of 21291281 is 18219212
Previous prime number is 11

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8

Name

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

Notation

Scientific notation	2.1291281 × 10^7
Engineering notation	2.1291281 × 10^6

Prime Factorization of 21291281

Prime Factorization 11 × 11 × 175961

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	1935571	Product of the distinct prime numbers

The prime factorization of 21291281 is 11 × 11 × 175961. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 10, 3, 2, 51, 475, 4118, 7134, 88619, 81369, 848681, 868718, 8532859, 8254720, 19184307, 32961032, 181046551, 312859905, 6497809111, 9342451912

Basic calculations (n = 21291281)

Multiplication

n×y

n×2	42582562
n×3	63873843
n×4	85165124
n×5	106456405

Division

n÷y

n÷2	10645640.5
n÷3	7097093.6666667
n÷3	5322820.25
n÷5	4258256.2

Exponentiation

n^y

n²	453318646620961
n³	9.6517346877466E+21
n⁴	2.0549779537426E+29
n⁵	4.3753113061939E+36

Nth Root

^y√n

²√n	4614.2476093075
³√n	277.16215574736
⁴√n	67.92825339509
⁵√n	29.217318735351

Divisors of 21291281

1, 11, 121, 175961, 1935571, 21291281

6 divisors

τ	Total Divisors	6	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21291280	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.16666666666667	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	6	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21291281 can be divided by 6 positive divisors. The sum of these divisors (counting 21291281) is 1, the average is 0.16666666666667.

Base conversion 21291281

Base	System	Value
2	Binary	1010001001110000100010001
3	Ternary	1111001201010222
4	Quaternary	1101032010101
5	Quinary	20422310111
6	Senary	2040202425
8	Octal	121160421
10	Decimal	21291281
12	Duodecimal	7169415
16	Hexadecimal	144e111
20	Vigesimal	6d1841
36	Base36	cocgh

Cryptographic Hash Functions

md5	502a5077454c2d8a78aab9142bfadfb0
sha1	8f1fd70a6179c9cb35d8049331afc5d2b3989341
sha256	abf6cbdb777f039a06805048fbea69faf0e8b97dfb564bb0ba262c72a4cd6cd5
sha512	f60edd67c2ce7c522b1bbbbc4bf2a592300af0a2c0c3895862143a7041b88624465a42f152ff925cf6f4148f81fca7a406952a182a61ee6239fcef3a740f29a9
ripemd-160	b140fc24e7c0f513cff9a32f18716ae4ad7e740d

21291281 as geometric shapes

Circle

Radius = n

Diameter	42582562
Circumference	133777063.95023
Area	1.4241425299597E+15

Sphere

Radius = n

Volume	4.042909171923E+22
Surface area	5.6965701198387E+15
Circumference	133777063.95023

Square

Length = n

Perimeter	85165124
Area	453318646620961
Diagonal	30110418.350497

Cube

Length = n

Surface area	2719911879725766
Volume	9.6517346877466E+21
Space diagonal	36877580.450226

Equilateral Triangle

Length = n

Perimeter	63873843
Area	1.9629273199147E+14
Altitude	18438790.225113

Triangular Pyramid

Length = n

Surface area	1.9629273199147E+14
Volume	1.1374678413198E+21
Height	10036806.116832