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

21356721 (number)

21356721 is an odd 8-digits composite number following 21356720 and preceding 21356722. In scientific notation, it is written as 2.1356721 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors. There are 13968864 positive integers (up to 21356721) that are relatively prime to 21356721.

Interesting facts

21356721 has 12 divisors, whose sum is 31431348
The reverse of 21356721 is 12765312
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9

Name

Name	twenty-one million three hundred fifty-six thousand seven hundred twenty-one

Notation

Scientific notation	2.1356721 × 10^7
Engineering notation	2.1356721 × 10^6

Prime Factorization of 21356721

Prime Factorization 3 × 53 × 3 × 44773

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	7118907	Product of the distinct prime numbers

The prime factorization of 21356721 is 3 × 53 × 3 × 44773. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 8, 1, 53, 494, 239, 7626, 7381, 22472, 96733, 611518, 688596, 5289144, 1385519, 42960492, 82795556, 841261722, 414775774, 1295134810, 5900189747

Basic calculations (n = 21356721)

Multiplication

n×y

n×2	42713442
n×3	64070163
n×4	85426884
n×5	106783605

Division

n÷y

n÷2	10678360.5
n÷3	7118907
n÷3	5339180.25
n÷5	4271344.2

Exponentiation

n^y

n²	456109531871841
n³	9.7410040176275E+21
n⁴	2.0803590506435E+29
n⁵	4.4429647824418E+36

Nth Root

^y√n

²√n	4621.3332491825
³√n	277.44582336577
⁴√n	67.980388710146
⁵√n	29.23525692356

Divisors of 21356721

1, 3, 9, 53, 159, 477, 44773, 134319, 402957, 2372969, 7118907, 21356721

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21356720	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21356721 can be divided by 12 positive divisors. The sum of these divisors (counting 21356721) is 1, the average is 0.083333333333333.

Base conversion 21356721

Base	System	Value
2	Binary	1010001011110000010110001
3	Ternary	1111012000220200
4	Quaternary	1101132002301
5	Quinary	20431403341
6	Senary	2041425413
8	Octal	121360261
10	Decimal	21356721
12	Duodecimal	719b269
16	Hexadecimal	145e0b1
20	Vigesimal	6d9bg1
36	Base36	cpqy9

Cryptographic Hash Functions

md5	629042d191f4e84466ad66d8351ef39e
sha1	0e13d00e8b8b8b82606cb16fb476bcd14f008286
sha256	7d8170ce8dbe141611c7fc726057867bea11b122806987f617c7115479f0792e
sha512	5238f89eb278714d0e3c2c02e1e3d65f4ce30b70a07bf3a5d534afdb0e1f6c4151daf28fe2f2a5179789c36267838fce9b4eddd6b393621033c59e769f9f7507
ripemd-160	b1d3a9091abdecf1682761ddc10886849f30ed74

21356721 as geometric shapes

Circle

Radius = n

Diameter	42713442
Circumference	134188235.59673
Area	1.4329103545609E+15

Sphere

Radius = n

Volume	4.0803022213823E+22
Surface area	5.7316414182434E+15
Circumference	134188235.59673

Square

Length = n

Perimeter	85426884
Area	456109531871841
Diagonal	30202964.486018

Cube

Length = n

Surface area	2736657191231046
Volume	9.7410040176275E+21
Space diagonal	36990925.855073

Equilateral Triangle

Length = n

Perimeter	64070163
Area	1.9750122075462E+14
Altitude	18495462.927537

Triangular Pyramid

Length = n

Surface area	1.9750122075462E+14
Volume	1.1479883327383E+21
Height	10067654.828673