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

21397979 (number)

21397979 is an odd 8-digits composite number following 21397978 and preceding 21397980. In scientific notation, it is written as 2.1397979 × 10^7. The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors. There are 21104784 positive integers (up to 21397979) that are relatively prime to 21397979.

Interesting facts

21397979 has 4 divisors, whose sum is 21691176
The reverse of 21397979 is 97979312
Previous prime number is 73

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2

Name

Name	twenty-one million three hundred ninety-seven thousand nine hundred seventy-nine

Notation

Scientific notation	2.1397979 × 10^7
Engineering notation	2.1397979 × 10^6

Prime Factorization of 21397979

Prime Factorization 73 × 293123

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21397979	Product of the distinct prime numbers

The prime factorization of 21397979 is 73 × 293123. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 4, 37, 85, 429, 749, 2659, 4428, 24569, 48416, 989780, 98308, 6326196, 4524876, 71995742, 8527219, 723818301, 917336899, 7184709935, 7432733882

Basic calculations (n = 21397979)

Multiplication

n×y

n×2	42795958
n×3	64193937
n×4	85591916
n×5	106989895

Division

n÷y

n÷2	10698989.5
n÷3	7132659.6666667
n÷3	5349494.75
n÷5	4279595.8

Exponentiation

n^y

n²	457873505284441
n³	9.7975676507329E+21
n⁴	2.0964814684146E+29
n⁵	4.4860466435025E+36

Nth Root

^y√n

²√n	4625.7949587071
³√n	277.62436975831
⁴√n	68.013196945204
⁵√n	29.246543836366

Divisors of 21397979

1, 73, 293123, 21397979

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	-21397978	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 21397979 can be divided by 4 positive divisors. The sum of these divisors (counting 21397979) is 1, the average is 0.25.

Base conversion 21397979

Base	System	Value
2	Binary	1010001101000000111011011
3	Ternary	1111021010111202
4	Quaternary	1101220013123
5	Quinary	20434213404
6	Senary	2042344415
8	Octal	121500733
10	Decimal	21397979
12	Duodecimal	71bb10b
16	Hexadecimal	14681db
20	Vigesimal	6deeij
36	Base36	cqmsb

Cryptographic Hash Functions

md5	a2dc809ea7bd73395e5cb165210215ab
sha1	62f5ef1a1d344e55a62ca2a1ae3f3325a6ebbf75
sha256	3179fdec8a79b2aa4f15f5c8846f0a32ae69e00cecc64fbcd406927d319f330c
sha512	589d346fa22283659ff2dde4c132ab6b56eeca9c4168769a12ccd606292fb4f5c21935b385f987b6882fdbb91c78544e615a771cf19092385e55c38d7760bfb1
ripemd-160	a61272c7e3a3e25163b3fe409dc934346e4eb81b

21397979 as geometric shapes

Circle

Radius = n

Diameter	42795958
Circumference	134447467.25614
Area	1.438452040475E+15

Sphere

Radius = n

Volume	4.1039955406122E+22
Surface area	5.7538081619E+15
Circumference	134447467.25614

Square

Length = n

Perimeter	85591916
Area	457873505284441
Diagonal	30261312.109175

Cube

Length = n

Surface area	2747241031706646
Volume	9.7975676507329E+21
Space diagonal	37062386.807292

Equilateral Triangle

Length = n

Perimeter	64193937
Area	1.9826504364808E+14
Altitude	18531193.403646

Triangular Pyramid

Length = n

Surface area	1.9826504364808E+14
Volume	1.1546544208279E+21
Height	10087104.036392