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

21691 (number)

21691 is an odd 5-digits composite number following 21690 and preceding 21692. In scientific notation, it is written as 2.1691 × 10^4. The sum of its digits is 19. It has a total of 2 prime factors and 4 positive divisors. There are 21384 positive integers (up to 21691) that are relatively prime to 21691.

Interesting facts

21691 has 4 divisors, whose sum is 22000
The reverse of 21691 is 19612
Previous prime number is 109

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 19
Digital Root 1

Name

Name	twenty-one thousand six hundred ninety-one

Notation

Scientific notation	2.1691 × 10^4
Engineering notation	2.1691 × 10^3

Prime Factorization of 21691

Prime Factorization 109 × 199

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21691	Product of the distinct prime numbers

The prime factorization of 21691 is 109 × 199. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 9, 41, 91, 889, 361, 4632, 3731, 84399, 42891, 713432, 637103, 7442569, 1720055, 29996371, 52917950, 263834615, 743452045, 6598408427, 2827731497

Basic calculations (n = 21691)

Multiplication

n×y

n×2	43382
n×3	65073
n×4	86764
n×5	108455

Division

n÷y

n÷2	10845.5
n÷3	7230.3333333333
n÷3	5422.75
n÷5	4338.2

Exponentiation

n^y

n²	470499481
n³	10205604242371
n⁴	221369761621269361
n⁵	4.801731499327E+21

Nth Root

^y√n

²√n	147.27864746799
³√n	27.888587891006
⁴√n	12.13584144046
⁵√n	7.3664104697639

Divisors of 21691

1, 109, 199, 21691

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	-21690	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 21691 can be divided by 4 positive divisors. The sum of these divisors (counting 21691) is 1, the average is 0.25.

Base conversion 21691

Base	System	Value
2	Binary	101010010111011
3	Ternary	1002202101
4	Quaternary	11102323
5	Quinary	1143231
6	Senary	244231
8	Octal	52273
10	Decimal	21691
12	Duodecimal	10677
16	Hexadecimal	54bb
20	Vigesimal	2e4b
36	Base36	gqj

Cryptographic Hash Functions

md5	006b9646dcba176709eb7a322e61e2b7
sha1	df83e788d53eb4ef20ccf048309ecd7382139087
sha256	657fa6d81637d870243e4a6759d6fce0666c5bcd3f51fc128490eb6b1388f233
sha512	71017b640556e6e5dc7682b2c9978ee3d75282c402ee7a2684a8fe2c48e10c6f0e7316f51640ace42fe85c09dce7ecbe40c43edbdd75d343cd6fb6a2b2120ae1
ripemd-160	e5f8e1d375973441d4944f21c092770b78f64409

21691 as geometric shapes

Circle

Radius = n

Diameter	43382
Circumference	136288.57249803
Area	1478117713.0274

Sphere

Radius = n

Volume	42749135084370
Surface area	5912470852.1096
Circumference	136288.57249803

Square

Length = n

Perimeter	86764
Area	470499481
Diagonal	30675.706381435

Cube

Length = n

Surface area	2822996886
Volume	10205604242371
Space diagonal	37569.914066977

Equilateral Triangle

Length = n

Perimeter	65073
Area	203732251.5067
Altitude	18784.957033488

Triangular Pyramid

Length = n

Surface area	203732251.5067
Volume	1202741994314.5
Height	10225.235460478