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

20391491 (number)

20391491 is an odd 8-digits composite number following 20391490 and preceding 20391492. In scientific notation, it is written as 2.0391491 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 20128000 positive integers (up to 20391491) that are relatively prime to 20391491.

Interesting facts

20391491 has 8 divisors, whose sum is 20656944
The reverse of 20391491 is 19419302
Previous prime number is 251

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

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

Notation

Scientific notation	2.0391491 × 10^7
Engineering notation	2.0391491 × 10^6

Prime Factorization of 20391491

Prime Factorization 593 × 251 × 137

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20391491	Product of the distinct prime numbers

The prime factorization of 20391491 is 593 × 251 × 137. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 2, 80, 87, 369, 757, 1863, 1697, 56014, 13342, 543648, 678718, 5667618, 2892823, 87542345, 91000850, 129675753, 921864986, 855100939, 2718680539

Basic calculations (n = 20391491)

Multiplication

n×y

n×2	40782982
n×3	61174473
n×4	81565964
n×5	101957455

Division

n÷y

n÷2	10195745.5
n÷3	6797163.6666667
n÷3	5097872.75
n÷5	4078298.2

Exponentiation

n^y

n²	415812905203081
n³	8.4790451141325E+21
n⁴	1.7290037213343E+29
n⁵	3.5256963822554E+36

Nth Root

^y√n

²√n	4515.6938558764
³√n	273.20144622152
⁴√n	67.19891260933
⁵√n	28.966084708667

Divisors of 20391491

1, 137, 251, 593, 34387, 81241, 148843, 20391491

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20391490	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20391491 can be divided by 8 positive divisors. The sum of these divisors (counting 20391491) is 1, the average is 0.125.

Base conversion 20391491

Base	System	Value
2	Binary	1001101110010011001000011
3	Ternary	1102100222212102
4	Quaternary	1031302121003
5	Quinary	20210011431
6	Senary	2005021015
8	Octal	115623103
10	Decimal	20391491
12	Duodecimal	69b476b
16	Hexadecimal	1372643
20	Vigesimal	678ieb
36	Base36	c526b

Cryptographic Hash Functions

md5	80c818aceded146e9701d58d9108affd
sha1	4b8e0ff07e1faea06652b8908c5aac618c6555d8
sha256	79843ee82bbb0a9ad7c386a9d7439291dcd70fc428998edd4ed908e334927f4a
sha512	0ef629af67c34ca916ec8388e52cab432721da3280584fac37748db2deb6ddff83aded3830f505ac2377d12b1bbd13bf16545d0780550cc96996dff81570cf67
ripemd-160	cd012cd0470f75bf01efbef49a9126a5106ffb82

20391491 as geometric shapes

Circle

Radius = n

Diameter	40782982
Circumference	128123516.64268
Area	1.3063147682538E+15

Sphere

Radius = n

Volume	3.551694112002E+22
Surface area	5.2252590730153E+15
Circumference	128123516.64268

Square

Length = n

Perimeter	81565964
Area	415812905203081
Diagonal	28837923.129209

Cube

Length = n

Surface area	2494877431218486
Volume	8.4790451141325E+21
Space diagonal	35319098.454083

Equilateral Triangle

Length = n

Perimeter	61174473
Area	1.8005226956364E+14
Altitude	17659549.227042

Triangular Pyramid

Length = n

Surface area	1.8005226956364E+14
Volume	9.9926504969829E+20
Height	9612641.0430696