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

21491389 (number)

21491389 is an odd 8-digits composite number following 21491388 and preceding 21491390. In scientific notation, it is written as 2.1491389 × 10^7. The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors. There are 21170556 positive integers (up to 21491389) that are relatively prime to 21491389.

Interesting facts

21491389 has 4 divisors, whose sum is 21812224
The reverse of 21491389 is 98319412
Previous prime number is 67

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	twenty-one million four hundred ninety-one thousand three hundred eighty-nine

Notation

Scientific notation	2.1491389 × 10^7
Engineering notation	2.1491389 × 10^6

Prime Factorization of 21491389

Prime Factorization 67 × 320767

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21491389	Product of the distinct prime numbers

The prime factorization of 21491389 is 67 × 320767. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 3, 35, 13, 833, 986, 8550, 4088, 26538, 95330, 400298, 187330, 419805, 1411454, 81005910, 50614923, 528570003, 417441487, 715035591, 9570717096

Basic calculations (n = 21491389)

Multiplication

n×y

n×2	42982778
n×3	64474167
n×4	85965556
n×5	107456945

Division

n÷y

n÷2	10745694.5
n÷3	7163796.3333333
n÷3	5372847.25
n÷5	4298277.8

Exponentiation

n^y

n²	461879801149321
n³	9.9264384777427E+21
n⁴	2.1333295070974E+29
n⁵	4.5848214302208E+36

Nth Root

^y√n

²√n	4635.8806067456
³√n	278.02776062857
⁴√n	68.087301361896
⁵√n	29.272033736932

Divisors of 21491389

1, 67, 320767, 21491389

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	-21491388	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 21491389 can be divided by 4 positive divisors. The sum of these divisors (counting 21491389) is 1, the average is 0.25.

Base conversion 21491389

Base	System	Value
2	Binary	1010001111110111010111101
3	Ternary	1111102212122101
4	Quaternary	1101332322331
5	Quinary	21000211024
6	Senary	2044345101
8	Octal	121767275
10	Decimal	21491389
12	Duodecimal	7245191
16	Hexadecimal	147eebd
20	Vigesimal	6e6899
36	Base36	csmv1

Cryptographic Hash Functions

md5	4271a35d98101c70ebae67935d8578fb
sha1	ec13e5f4c743cb1ab600f2759263a442ddaa1255
sha256	cefd313ceaba79690fe547740accd61a3038d3f9917def610136c35e1faf2c4c
sha512	073fa75911cc2f234e01910cd69ea135e027fb39f5912ef7423d3a5d6dc5c3c65ec6acb319c0871565272f8d2de7c038d21551fdebc5342b95da1ae635385b52
ripemd-160	9e2ff5f889f25a7a7fbbbe2f52c3b2f5bb17148c

21491389 as geometric shapes

Circle

Radius = n

Diameter	42982778
Circumference	135034379.59568
Area	1.4510381901322E+15

Sphere

Radius = n

Volume	4.1579768263983E+22
Surface area	5.8041527605289E+15
Circumference	135034379.59568

Square

Length = n

Perimeter	85965556
Area	461879801149321
Diagonal	30393413.798036

Cube

Length = n

Surface area	2771278806895926
Volume	9.9264384777427E+21
Space diagonal	37224177.673227

Equilateral Triangle

Length = n

Perimeter	64474167
Area	1.9999982064511E+14
Altitude	18612088.836613

Triangular Pyramid

Length = n

Surface area	1.9999982064511E+14
Volume	1.1698419934405E+21
Height	10131137.932679