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

20390987 (number)

20390987 is an odd 8-digits composite number following 20390986 and preceding 20390988. In scientific notation, it is written as 2.0390987 × 10^7. The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors. There are 19633320 positive integers (up to 20390987) that are relatively prime to 20390987.

Interesting facts

20390987 has 8 divisors, whose sum is 21162240
The reverse of 20390987 is 78909302
Previous prime number is 71

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2

Name

Name	twenty million three hundred ninety thousand nine hundred eighty-seven

Notation

Scientific notation	2.0390987 × 10^7
Engineering notation	2.0390987 × 10^6

Prime Factorization of 20390987

Prime Factorization 43 × 71 × 6679

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20390987	Product of the distinct prime numbers

The prime factorization of 20390987 is 43 × 71 × 6679. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 3, 32, 43, 20, 486, 7210, 2352, 16951, 22997, 998137, 991932, 820257, 6694700, 67151614, 31276479, 144911346, 440061173, 2829910316, 6421175860

Basic calculations (n = 20390987)

Multiplication

n×y

n×2	40781974
n×3	61172961
n×4	81563948
n×5	101954935

Division

n÷y

n÷2	10195493.5
n÷3	6796995.6666667
n÷3	5097746.75
n÷5	4078197.4

Exponentiation

n^y

n²	415792350834169
n³	8.478416420559E+21
n⁴	1.728832790122E+29
n⁵	3.5252606948552E+36

Nth Root

^y√n

²√n	4515.6380501542
³√n	273.19919536987
⁴√n	67.198497380181
⁵√n	28.965941520991

Divisors of 20390987

1, 43, 71, 3053, 6679, 287197, 474209, 20390987

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	-20390986	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 20390987 can be divided by 8 positive divisors. The sum of these divisors (counting 20390987) is 1, the average is 0.125.

Base conversion 20390987

Base	System	Value
2	Binary	1001101110010010001001011
3	Ternary	1102100222011202
4	Quaternary	1031302101023
5	Quinary	20210002422
6	Senary	2005014415
8	Octal	115622113
10	Decimal	20390987
12	Duodecimal	69b440b
16	Hexadecimal	137244b
20	Vigesimal	678h97
36	Base36	c51sb

Cryptographic Hash Functions

md5	d5e038ad494192b01e7ac23532a55b0a
sha1	02d3b0daa843280cfef86ed3470fcfc0e1db6c62
sha256	d21cfeb82a0ca8bba4f9f59d2931faf9f0dbef3b8e268b2b44c54cab875121ae
sha512	f106414aa317f7f1ccfe32290f0615f0672fbc3a05b1f0dbe60ece98f7ae60b1826f872c1a4766ca84ec67d8180bea18b604ca4ccce7813c733ef16b650d7af7
ripemd-160	1878d8671d21ee3bc4ce2ac1dc3cfc41ce232566

20390987 as geometric shapes

Circle

Radius = n

Diameter	40781974
Circumference	128120349.91729
Area	1.3062501947995E+15

Sphere

Radius = n

Volume	3.5514307654538E+22
Surface area	5.2250007791978E+15
Circumference	128120349.91729

Square

Length = n

Perimeter	81563948
Area	415792350834169
Diagonal	28837210.365573

Cube

Length = n

Surface area	2494754105005014
Volume	8.478416420559E+21
Space diagonal	35318225.500476

Equilateral Triangle

Length = n

Perimeter	61172961
Area	1.8004336926082E+14
Altitude	17659112.750238

Triangular Pyramid

Length = n

Surface area	1.8004336926082E+14
Volume	9.9919095745011E+20
Height	9612403.4551912