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

21690721 (number)

21690721 is an odd 8-digits composite number following 21690720 and preceding 21690722. In scientific notation, it is written as 2.1690721 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 20022192 positive integers (up to 21690721) that are relatively prime to 21690721.

Interesting facts

21690721 has 4 divisors, whose sum is 23359252
The reverse of 21690721 is 12709612
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 six hundred ninety thousand seven hundred twenty-one

Notation

Scientific notation	2.1690721 × 10^7
Engineering notation	2.1690721 × 10^6

Prime Factorization of 21690721

Prime Factorization 13 × 1668517

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21690721	Product of the distinct prime numbers

The prime factorization of 21690721 is 13 × 1668517. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 5, 94, 60, 623, 222, 4975, 7376, 55784, 63092, 387536, 493060, 9281736, 419612, 82113979, 13948779, 355306481, 359596796, 2534793245, 7534520319

Basic calculations (n = 21690721)

Multiplication

n×y

n×2	43381442
n×3	65072163
n×4	86762884
n×5	108453605

Division

n÷y

n÷2	10845360.5
n÷3	7230240.3333333
n÷3	5422680.25
n÷5	4338144.2

Exponentiation

n^y

n²	470487377499841
n³	1.0205210439371E+22
n⁴	2.2135837238668E+29
n⁵	4.8014226964535E+36

Nth Root

^y√n

²√n	4657.3298143894
³√n	278.88468318382
⁴√n	68.244632128757
⁵√n	29.326132850606

Divisors of 21690721

1, 13, 1668517, 21690721

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	-21690720	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 21690721 can be divided by 4 positive divisors. The sum of these divisors (counting 21690721) is 1, the average is 0.25.

Base conversion 21690721

Base	System	Value
2	Binary	1010010101111100101100001
3	Ternary	1111211000002001
4	Quaternary	1102233211201
5	Quinary	21023100341
6	Senary	2052524001
8	Octal	122574541
10	Decimal	21690721
12	Duodecimal	7320601
16	Hexadecimal	14af961
20	Vigesimal	6fb6g1
36	Base36	cwwo1

Cryptographic Hash Functions

md5	b1b29ae3a316a6dc78b7d4b379dc8f40
sha1	807bc87cf4323eb8a2e1eb2249de233a637f9039
sha256	81510a8b64fd215e896c410da5f093b314215e63d93b2155c4b0f549ab90b7e6
sha512	f495ac1f11d8c4096d63f1f4bfab38626128ea7efe7df39ecf6eb44d4cfffe3eb51020d96d7a8f51ce6b4fb7aa632c8dd7321b494e76a2c576a4dbc62a2bbb10
ripemd-160	d18f9604db6e7ab0f8eed59b77c95fe75354a592

21690721 as geometric shapes

Circle

Radius = n

Diameter	43381442
Circumference	136286819.48933
Area	1.4780796887602E+15

Sphere

Radius = n

Volume	4.274748552622E+22
Surface area	5.9123187550409E+15
Circumference	136286819.48933

Square

Length = n

Perimeter	86762884
Area	470487377499841
Diagonal	30675311.815851

Cube

Length = n

Surface area	2822924264999046
Volume	1.0205210439371E+22
Space diagonal	37569430.824801

Equilateral Triangle

Length = n

Perimeter	65072163
Area	2.0372701053739E+14
Altitude	18784715.412401

Triangular Pyramid

Length = n

Surface area	2.0372701053739E+14
Volume	1.2026955841858E+21
Height	10225103.938617