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

20181388 (number)

20181388 is an even 8-digits composite number following 20181387 and preceding 20181389. In scientific notation, it is written as 2.0181388 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 6 positive divisors. There are 10090692 positive integers (up to 20181388) that are relatively prime to 20181388.

Interesting facts

20181388 has 6 divisors, whose sum is 35317436
The reverse of 20181388 is 88318102
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 million one hundred eighty-one thousand three hundred eighty-eight

Notation

Scientific notation	2.0181388 × 10^7
Engineering notation	2.0181388 × 10^6

Prime Factorization of 20181388

Prime Factorization 2 × 2 × 5045347

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	10090694	Product of the distinct prime numbers

The prime factorization of 20181388 is 2 × 2 × 5045347. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 9, 59, 64, 221, 227, 4577, 205, 72390, 63913, 358691, 353104, 6204709, 3980323, 69908491, 81093935, 333381128, 633438609, 677855827, 1329323364

Basic calculations (n = 20181388)

Multiplication

n×y

n×2	40362776
n×3	60544164
n×4	80725552
n×5	100906940

Division

n÷y

n÷2	10090694
n÷3	6727129.3333333
n÷3	5045347
n÷5	4036277.6

Exponentiation

n^y

n²	407288421606544
n³	8.2196456643492E+21
n⁴	1.6588385837475E+29
n⁵	3.3477665087979E+36

Nth Root

^y√n

²√n	4492.3699758591
³√n	272.25989792455
⁴√n	67.025144355377
⁵√n	28.906146966354

Divisors of 20181388

1, 2, 4, 5045347, 10090694, 20181388

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	-20181387	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 20181388 can be divided by 6 positive divisors. The sum of these divisors (counting 20181388) is 1, the average is 0.16666666666667.

Base conversion 20181388

Base	System	Value
2	Binary	1001100111111000110001100
3	Ternary	1101222022122211
4	Quaternary	1030333012030
5	Quinary	20131301023
6	Senary	2000320204
8	Octal	114770614
10	Decimal	20181388
12	Duodecimal	6913064
16	Hexadecimal	133f18c
20	Vigesimal	662d98
36	Base36	c0k24

Cryptographic Hash Functions

md5	e533c4e86ea3e8f9db1cd8a4967c3fe7
sha1	b1d8909b1937d18ee303a7ee4037c66995caa484
sha256	95ff342cd2279a2fe6f4f9851c65ec56ed90e1d8475a7d9aba5f514987538daa
sha512	2479c1d669a0b7df4610116afb7618c730e1e723a688031a150f7b913d140b2758c42f00f83b47ac26dfdd5d8fc9ab7930b22cd9573a5e741c3e40f1f46c79f2
ripemd-160	e5ab20a85f521e48c0fb45e9e036b81b27329060

20181388 as geometric shapes

Circle

Radius = n

Diameter	40362776
Circumference	126803400.56009
Area	1.2795343132113E+15

Sphere

Radius = n

Volume	3.4430371245641E+22
Surface area	5.1181372528452E+15
Circumference	126803400.56009

Square

Length = n

Perimeter	80725552
Area	407288421606544
Diagonal	28540792.617114

Cube

Length = n

Surface area	2443730529639264
Volume	8.2196456643492E+21
Space diagonal	34955189.383261

Equilateral Triangle

Length = n

Perimeter	60544164
Area	1.7636105988927E+14
Altitude	17477594.69163

Triangular Pyramid

Length = n

Surface area	1.7636105988927E+14
Volume	9.6869453136866E+20
Height	9513597.5390379