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

21005891 (number)

21005891 is an odd 8-digits prime number following 21005890 and preceding 21005892. In scientific notation, it is written as 2.1005891 × 10^7. The sum of its digits is 26. It has a total of 1 prime factors and 2 positive divisors. There are 21005890 positive integers (up to 21005891) that are relatively prime to 21005891.

Interesting facts

21005891 has 2 divisors, whose sum is 21005892
The reverse of 21005891 is 19850012
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8

Name

Name	twenty-one million five thousand eight hundred ninety-one

Notation

Scientific notation	2.1005891 × 10^7
Engineering notation	2.1005891 × 10^6

Prime Factorization of 21005891

Prime Factorization 21005891

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	21005891	Product of the distinct prime numbers

The prime factorization of 21005891 is 21005891. Since it has a total of 1 prime factors.

Most popular turbo-numbers

7, 4, 24, 54, 592, 110, 5006, 9038, 17464, 78616, 483464, 324668, 4068012, 5971876, 63432176, 27221891, 856022921, 549354485, 4109072114, 327880045

Basic calculations (n = 21005891)

Multiplication

n×y

n×2	42011782
n×3	63017673
n×4	84023564
n×5	105029455

Division

n÷y

n÷2	10502945.5
n÷3	7001963.6666667
n÷3	5251472.75
n÷5	4201178.2

Exponentiation

n^y

n²	441247456703881
n³	9.2687959795489E+21
n⁴	1.9469931804764E+29
n⁵	4.0898326526831E+36

Nth Root

^y√n

²√n	4583.2184106804
³√n	275.91821335683
⁴√n	67.699471273271
⁵√n	29.138569123139

Divisors of 21005891

1, 21005891

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	21005892	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10502946	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4583.2185197741	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999047886	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21005891 can be divided by 2 positive divisors. The sum of these divisors (counting 21005891) is 21005892, the average is 10502946.

Base conversion 21005891

Base	System	Value
2	Binary	1010000001000011001000011
3	Ternary	1110112012122222
4	Quaternary	1100020121003
5	Quinary	20334142031
6	Senary	2030121255
8	Octal	120103103
10	Decimal	21005891
12	Duodecimal	705022b
16	Hexadecimal	1408643
20	Vigesimal	6b5eeb
36	Base36	ci88z

Cryptographic Hash Functions

md5	916073e94edaf72c4441398ebc9da023
sha1	1f77a4186bc47be196cf37fcc11cf881b403d383
sha256	2781ee698453901f12a98ca39eb3251d0006af0285ad6a72b657acf623e210cf
sha512	e1fa16d722e936d1c86b35734e82b2609a3bbbbaa9e33ce11e55188cc72b496387a925ac4cf5c3c2cf8a6588526268c9882c39170a8c79dcc1813805f23e25b0
ripemd-160	10f7ca140971b5b27fd2ea1650241d4276636ad3

21005891 as geometric shapes

Circle

Radius = n

Diameter	42011782
Circumference	131983905.69542
Area	1.3862197683961E+15

Sphere

Radius = n

Volume	3.8825041809298E+22
Surface area	5.5448790735844E+15
Circumference	131983905.69542

Square

Length = n

Perimeter	84023564
Area	441247456703881
Diagonal	29706815.941931

Cube

Length = n

Surface area	2647484740223286
Volume	9.2687959795489E+21
Space diagonal	36383270.470254

Equilateral Triangle

Length = n

Perimeter	63017673
Area	1.9106575343042E+14
Altitude	18191635.235127

Triangular Pyramid

Length = n

Surface area	1.9106575343042E+14
Volume	1.0923380817623E+21
Height	9902271.9806436