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

21242721 (number)

21242721 is an odd 8-digits composite number following 21242720 and preceding 21242722. In scientific notation, it is written as 2.1242721 × 10^7. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 14161812 positive integers (up to 21242721) that are relatively prime to 21242721.

Interesting facts

21242721 has 4 divisors, whose sum is 28323632
The reverse of 21242721 is 12724212
Previous prime number is 3

Basic properties

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

Name

Name	twenty-one million two hundred forty-two thousand seven hundred twenty-one

Notation

Scientific notation	2.1242721 × 10^7
Engineering notation	2.1242721 × 10^6

Prime Factorization of 21242721

Prime Factorization 3 × 7080907

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21242721	Product of the distinct prime numbers

The prime factorization of 21242721 is 3 × 7080907. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 8, 25, 13, 47, 367, 441, 9585, 64954, 63237, 92738, 172488, 2839198, 7937599, 28715581, 40659784, 463054215, 457297521, 2195444250, 4257632089

Basic calculations (n = 21242721)

Multiplication

n×y

n×2	42485442
n×3	63728163
n×4	84970884
n×5	106213605

Division

n÷y

n÷2	10621360.5
n÷3	7080907
n÷3	5310680.25
n÷5	4248544.2

Exponentiation

n^y

n²	451253195483841
n³	9.5858457320217E+21
n⁴	2.0362944643438E+29
n⁵	4.3256435179899E+36

Nth Root

^y√n

²√n	4608.982642623
³√n	276.95128320836
⁴√n	67.889488454569
⁵√n	29.203979104595

Divisors of 21242721

1, 3, 7080907, 21242721

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	-21242720	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 21242721 can be divided by 4 positive divisors. The sum of these divisors (counting 21242721) is 1, the average is 0.25.

Base conversion 21242721

Base	System	Value
2	Binary	1010001000010001101100001
3	Ternary	1110222020112110
4	Quaternary	1101002031201
5	Quinary	20414231341
6	Senary	2035145533
8	Octal	121021541
10	Decimal	21242721
12	Duodecimal	71452a9
16	Hexadecimal	1442361
20	Vigesimal	6cf6g1
36	Base36	cnazl

Cryptographic Hash Functions

md5	0523d0c54465383f06ac0671b9eac9d1
sha1	a726cdd21f296fd0a7d4c5623fce4beacf41cb9d
sha256	4f2b2e765d1eaff38ae994454bb3e8966264312597dc7612523d45b39e5585d8
sha512	c732f1f5917e5a5c018de55cfb1ad57c5f1ce26fd2a5f3d43df85cb017223511be99b1f6d31a3493d0d3e33c2ef4d61a26354e40c5326a656e89e9104d6125c8
ripemd-160	2fa29bb88c4e9b86968fec01140b2d1493b60904

21242721 as geometric shapes

Circle

Radius = n

Diameter	42485442
Circumference	133471952.47172
Area	1.417653723841E+15

Sphere

Radius = n

Volume	4.0153096706886E+22
Surface area	5.6706148953638E+15
Circumference	133471952.47172

Square

Length = n

Perimeter	84970884
Area	451253195483841
Diagonal	30041744.139908

Cube

Length = n

Surface area	2707519172903046
Volume	9.5858457320217E+21
Space diagonal	36793472.06301

Equilateral Triangle

Length = n

Perimeter	63728163
Area	1.9539836541396E+14
Altitude	18396736.031505

Triangular Pyramid

Length = n

Surface area	1.9539836541396E+14
Volume	1.1297027534201E+21
Height	10013914.713303