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

20138987 (number)

20138987 is an odd 8-digits composite number following 20138986 and preceding 20138988. In scientific notation, it is written as 2.0138987 × 10^7. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 18308160 positive integers (up to 20138987) that are relatively prime to 20138987.

Interesting facts

20138987 has 4 divisors, whose sum is 21969816
The reverse of 20138987 is 78983102
Previous prime number is 11

Basic properties

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

Name

Name	twenty million one hundred thirty-eight thousand nine hundred eighty-seven

Notation

Scientific notation	2.0138987 × 10^7
Engineering notation	2.0138987 × 10^6

Prime Factorization of 20138987

Prime Factorization 11 × 1830817

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20138987	Product of the distinct prime numbers

The prime factorization of 20138987 is 11 × 1830817. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 4, 66, 21, 748, 995, 8987, 3364, 70356, 86015, 857010, 983582, 9412645, 4385023, 27019640, 88237129, 248614649, 104961438, 6347205597, 9330670817

Basic calculations (n = 20138987)

Multiplication

n×y

n×2	40277974
n×3	60416961
n×4	80555948
n×5	100694935

Division

n÷y

n÷2	10069493.5
n÷3	6712995.6666667
n÷3	5034746.75
n÷5	4027797.4

Exponentiation

n^y

n²	405578797386169
n³	8.1679461280357E+21
n⁴	1.6449416088921E+29
n⁵	3.3127457677237E+36

Nth Root

^y√n

²√n	4487.648270531
³√n	272.06909198533
⁴√n	66.989911707144
⁵√n	28.893990410309

Divisors of 20138987

1, 11, 1830817, 20138987

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20138986	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20138987 can be divided by 4 positive divisors. The sum of these divisors (counting 20138987) is 1, the average is 0.25.

Base conversion 20138987

Base	System	Value
2	Binary	1001100110100101111101011
3	Ternary	1101220011111102
4	Quaternary	1030310233223
5	Quinary	20123421422
6	Senary	1555352015
8	Octal	114645753
10	Decimal	20138987
12	Duodecimal	68b260b
16	Hexadecimal	1334beb
20	Vigesimal	65h797
36	Base36	bzncb

Cryptographic Hash Functions

md5	68db63689e71b2bae2bb589828f518df
sha1	75291e06d97e698ee68661f20e093f3d9c3cfad6
sha256	56992f6f4e6466b4d300f9688a06f6fe019233d493de94700e9cd56c18ad2a5f
sha512	c7b5a2c6ef4090465fb7d3a663f5b6e6a53890f3f8a3050cb208e027eacdb51ccba1fd21969ce44f6081801d054b6bbcf654bb8eab1c1ab7ebc93eca5c976b57
ripemd-160	6e0bf07ddb839809ed50ce4e824294e61ae9a1e7

20138987 as geometric shapes

Circle

Radius = n

Diameter	40277974
Circumference	126536987.21988
Area	1.2741633703202E+15

Sphere

Radius = n

Volume	3.4213812734339E+22
Surface area	5.0966534812807E+15
Circumference	126536987.21988

Square

Length = n

Perimeter	80555948
Area	405578797386169
Diagonal	28480828.547855

Cube

Length = n

Surface area	2433472784317014
Volume	8.1679461280357E+21
Space diagonal	34881748.696969

Equilateral Triangle

Length = n

Perimeter	60416961
Area	1.7562077088638E+14
Altitude	17440874.348485

Triangular Pyramid

Length = n

Surface area	1.7562077088638E+14
Volume	9.6260168258341E+20
Height	9493609.5159518