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

20181387 (number)

20181387 is an odd 8-digits composite number following 20181386 and preceding 20181388. In scientific notation, it is written as 2.0181387 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 13441352 positive integers (up to 20181387) that are relatively prime to 20181387.

Interesting facts

20181387 has 8 divisors, whose sum is 26934336
The reverse of 20181387 is 78318102
Previous prime number is 1307

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	twenty million one hundred eighty-one thousand three hundred eighty-seven

Notation

Scientific notation	2.0181387 × 10^7
Engineering notation	2.0181387 × 10^6

Prime Factorization of 20181387

Prime Factorization 3 × 1307 × 5147

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20181387	Product of the distinct prime numbers

The prime factorization of 20181387 is 3 × 1307 × 5147. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 3, 23, 27, 33, 479, 6848, 4233, 58527, 43166, 922700, 343533, 2414319, 3190268, 66445003, 4375085, 299836680, 949814438, 5998032173, 2462584401

Basic calculations (n = 20181387)

Multiplication

n×y

n×2	40362774
n×3	60544161
n×4	80725548
n×5	100906935

Division

n÷y

n÷2	10090693.5
n÷3	6727129
n÷3	5045346.75
n÷5	4036277.4

Exponentiation

n^y

n²	407288381243769
n³	8.219644442484E+21
n⁴	1.6588382549617E+29
n⁵	3.3477656793787E+36

Nth Root

^y√n

²√n	4492.3698645592
³√n	272.25989342766
⁴√n	67.025143525092
⁵√n	28.906146679891

Divisors of 20181387

1, 3, 1307, 3921, 5147, 15441, 6727129, 20181387

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	-20181386	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 20181387 can be divided by 8 positive divisors. The sum of these divisors (counting 20181387) is 1, the average is 0.125.

Base conversion 20181387

Base	System	Value
2	Binary	1001100111111000110001011
3	Ternary	1101222022122210
4	Quaternary	1030333012023
5	Quinary	20131301022
6	Senary	2000320203
8	Octal	114770613
10	Decimal	20181387
12	Duodecimal	6913063
16	Hexadecimal	133f18b
20	Vigesimal	662d97
36	Base36	c0k23

Cryptographic Hash Functions

md5	3e9261194e108ffbf5eb7d341f72b395
sha1	7f932622b66d7aea9f2c90efdcfa02d8acee2bed
sha256	39bb5c4b18c84fa49a406ab90edc8b3bdea69dac2eda9ce4dd493c1d46222de9
sha512	3164c08a73a4ccfad54519b46c2579561f7e3b11ad186f443792e51ebc758268e18156ec4c1caf40328658fa5f2cb3cb4ce025ef3da0ea16a55bf31d77267024
ripemd-160	5c0892b0f393ad8ec507a401f1a0067a06860ace

20181387 as geometric shapes

Circle

Radius = n

Diameter	40362774
Circumference	126803394.27691
Area	1.2795341864079E+15

Sphere

Radius = n

Volume	3.4430366127504E+22
Surface area	5.1181367456316E+15
Circumference	126803394.27691

Square

Length = n

Perimeter	80725548
Area	407288381243769
Diagonal	28540791.2029

Cube

Length = n

Surface area	2443730287462614
Volume	8.219644442484E+21
Space diagonal	34955187.65121

Equilateral Triangle

Length = n

Perimeter	60544161
Area	1.7636104241167E+14
Altitude	17477593.825605

Triangular Pyramid

Length = n

Surface area	1.7636104241167E+14
Volume	9.6869438737046E+20
Height	9513597.0676334