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

21081388 (number)

21081388 is an even 8-digits composite number following 21081387 and preceding 21081389. In scientific notation, it is written as 2.1081388 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 6 positive divisors. There are 10540692 positive integers (up to 21081388) that are relatively prime to 21081388.

Interesting facts

21081388 has 6 divisors, whose sum is 36892436
The reverse of 21081388 is 88318012
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4

Name

Name	twenty-one million eighty-one thousand three hundred eighty-eight

Notation

Scientific notation	2.1081388 × 10^7
Engineering notation	2.1081388 × 10^6

Prime Factorization of 21081388

Prime Factorization 2 × 2 × 5270347

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	10540694	Product of the distinct prime numbers

The prime factorization of 21081388 is 2 × 2 × 5270347. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 8, 98, 16, 376, 666, 9473, 9355, 79995, 98677, 66798, 51129, 443103, 763542, 29051607, 94525407, 640600197, 840579610, 6634881855, 7798194077

Basic calculations (n = 21081388)

Multiplication

n×y

n×2	42162776
n×3	63244164
n×4	84325552
n×5	105406940

Division

n÷y

n÷2	10540694
n÷3	7027129.3333333
n÷3	5270347
n÷5	4216277.6

Exponentiation

n^y

n²	444424920006544
n³	9.3690941755269E+21
n⁴	1.9751350952282E+29
n⁵	4.1638589294923E+36

Nth Root

^y√n

²√n	4591.4472663856
³√n	276.24837614983
⁴√n	67.760218907451
⁵√n	29.159484386765

Divisors of 21081388

1, 2, 4, 5270347, 10540694, 21081388

6 divisors

τ	Total Divisors	6	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21081387	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.16666666666667	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	6	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21081388 can be divided by 6 positive divisors. The sum of these divisors (counting 21081388) is 1, the average is 0.16666666666667.

Base conversion 21081388

Base	System	Value
2	Binary	1010000011010110100101100
3	Ternary	1110200001020011
4	Quaternary	1100122310230
5	Quinary	20344101023
6	Senary	2031503004
8	Octal	120326454
10	Decimal	21081388
12	Duodecimal	7087a64
16	Hexadecimal	141ad2c
20	Vigesimal	6bf398
36	Base36	cjui4

Cryptographic Hash Functions

md5	35f136fdc2dc158ce4768100be69c89b
sha1	357961384314988c2de3763fe59f539f5f99f80a
sha256	ba0d0caed00ae15326741aa16cb8bd12fa5bd6524a1d67eb3ea7756a22fb9549
sha512	9d44e0dccf2c8516262abfb378371ceb3147796373b13e51f838bfe92ffe3045a7fcf6a72c32caf4effc3a825cc09c461292541872356dea735f57633a58bb45
ripemd-160	77883302904e75ac6ca317d7900aa62d4f35abc8

21081388 as geometric shapes

Circle

Radius = n

Diameter	42162776
Circumference	132458267.33655
Area	1.3962020637648E+15

Sphere

Radius = n

Volume	3.9245169910168E+22
Surface area	5.5848082550592E+15
Circumference	132458267.33655

Square

Length = n

Perimeter	84325552
Area	444424920006544
Diagonal	29813584.823249

Cube

Length = n

Surface area	2666549520039264
Volume	9.3690941755269E+21
Space diagonal	36514035.110073

Equilateral Triangle

Length = n

Perimeter	63244164
Area	1.9244163540027E+14
Altitude	18257017.555036

Triangular Pyramid

Length = n

Surface area	1.9244163540027E+14
Volume	1.1041583375151E+21
Height	9937861.6077498