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

20131987 (number)

20131987 is an odd 8-digits prime number following 20131986 and preceding 20131988. In scientific notation, it is written as 2.0131987 × 10^7. The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors. There are 20131986 positive integers (up to 20131987) that are relatively prime to 20131987.

Interesting facts

20131987 has 2 divisors, whose sum is 20131988
The reverse of 20131987 is 78913102
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

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

Notation

Scientific notation	2.0131987 × 10^7
Engineering notation	2.0131987 × 10^6

Prime Factorization of 20131987

Prime Factorization 20131987

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	20131987	Product of the distinct prime numbers

The prime factorization of 20131987 is 20131987. Since it has a total of 1 prime factors.

Most popular turbo-numbers

1, 9, 98, 73, 522, 518, 1397, 4059, 62062, 28660, 664104, 14678, 8807227, 3464821, 83172177, 63221879, 921195471, 799943682, 4260089795, 6675092074

Basic calculations (n = 20131987)

Multiplication

n×y

n×2	40263974
n×3	60395961
n×4	80527948
n×5	100659935

Division

n÷y

n÷2	10065993.5
n÷3	6710662.3333333
n÷3	5032996.75
n÷5	4026397.4

Exponentiation

n^y

n²	405296900568169
n³	8.1594319333787E+21
n⁴	1.6426557761016E+29
n⁵	3.3069924729953E+36

Nth Root

^y√n

²√n	4486.8682842268
³√n	272.03756599807
⁴√n	66.984089784267
⁵√n	28.891981510265

Divisors of 20131987

1, 20131987

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	20131988	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10065994	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4486.8683956631	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999006556	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20131987 can be divided by 2 positive divisors. The sum of these divisors (counting 20131987) is 20131988, the average is 10065994.

Base conversion 20131987

Base	System	Value
2	Binary	1001100110011000010010011
3	Ternary	1101212210220011
4	Quaternary	1030303002103
5	Quinary	20123210422
6	Senary	1555255351
8	Octal	114630223
10	Decimal	20131987
12	Duodecimal	68aa557
16	Hexadecimal	1333093
20	Vigesimal	65g9j7
36	Base36	bzhxv

Cryptographic Hash Functions

md5	6a733c141831f28676e8fd247ace736e
sha1	d1207c108ef0ed5be1fc80b862f8d771852e5543
sha256	81a23ee826be74311b53a34b69ac675cdcb3f3aae0abccacd13df5952c028bd1
sha512	47496474e94c774e437bc9ba1f2fbc5b2ddd62391d35a21b64980c935c703932cdbd3c43c60b68e4b787dfdb132f0544bd441969fc18790b37a63bdfa97882c1
ripemd-160	4955a773be527358188140c8be01993419d00e85

20131987 as geometric shapes

Circle

Radius = n

Diameter	40263974
Circumference	126493004.92273
Area	1.2732777653477E+15

Sphere

Radius = n

Volume	3.4178148559158E+22
Surface area	5.0931110613907E+15
Circumference	126493004.92273

Square

Length = n

Perimeter	80527948
Area	405296900568169
Diagonal	28470929.052919

Cube

Length = n

Surface area	2431781403409014
Volume	8.1594319333787E+21
Space diagonal	34869624.341316

Equilateral Triangle

Length = n

Perimeter	60395961
Area	1.7549870598356E+14
Altitude	17434812.170658

Triangular Pyramid

Length = n

Surface area	1.7549870598356E+14
Volume	9.6159827512035E+20
Height	9490309.6843063