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

20138905 (number)

20138905 is an odd 8-digits composite number following 20138904 and preceding 20138906. In scientific notation, it is written as 2.0138905 × 10^7. The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors. There are 15555456 positive integers (up to 20138905) that are relatively prime to 20138905.

Interesting facts

20138905 has 8 divisors, whose sum is 25000200
The reverse of 20138905 is 50983102
Previous prime number is 29

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	twenty million one hundred thirty-eight thousand nine hundred five

Notation

Scientific notation	2.0138905 × 10^7
Engineering notation	2.0138905 × 10^6

Prime Factorization of 20138905

Prime Factorization 5 × 29 × 138889

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20138905	Product of the distinct prime numbers

The prime factorization of 20138905 is 5 × 29 × 138889. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 9, 70, 5, 320, 860, 5420, 4781, 22577, 5171, 483116, 871381, 2220863, 7600904, 36476213, 82560217, 37133122, 708848652, 4598532315, 1910565071

Basic calculations (n = 20138905)

Multiplication

n×y

n×2	40277810
n×3	60416715
n×4	80555620
n×5	100694525

Division

n÷y

n÷2	10069452.5
n÷3	6712968.3333333
n÷3	5034726.25
n÷5	4027781

Exponentiation

n^y

n²	405575494599025
n³	8.1678463560578E+21
n⁴	1.6449148181924E+29
n⁵	3.312678325667E+36

Nth Root

^y√n

²√n	4487.6391343333
³√n	272.0687227232
⁴√n	66.989843516262
⁵√n	28.893966880714

Divisors of 20138905

1, 5, 29, 145, 138889, 694445, 4027781, 20138905

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	-20138904	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 20138905 can be divided by 8 positive divisors. The sum of these divisors (counting 20138905) is 1, the average is 0.125.

Base conversion 20138905

Base	System	Value
2	Binary	1001100110100101110011001
3	Ternary	1101220011101101
4	Quaternary	1030310232121
5	Quinary	20123421110
6	Senary	1555351401
8	Octal	114645631
10	Decimal	20138905
12	Duodecimal	68b2561
16	Hexadecimal	1334b99
20	Vigesimal	65h755
36	Base36	bzna1

Cryptographic Hash Functions

md5	9189696c66a8448931705231d557ea18
sha1	bfe42e7f62589320b6aaa30c9295745ca2d95500
sha256	ce3a3a45512c37fceab2b03795e110656dee66e67457d863333fdc1c41677697
sha512	6ea931f307a7a52526aabef00af26433318fe4cdf95b109b0e18194a10403e6c45d01cecb82920aec3909c22244d622449dea520cb8d65fb54f9c08378e846f8
ripemd-160	a471d853c76fcc42e0d97743241e3610989fe9dd

20138905 as geometric shapes

Circle

Radius = n

Diameter	40277810
Circumference	126536471.99869
Area	1.2741529943083E+15

Sphere

Radius = n

Volume	3.4213394810455E+22
Surface area	5.0966119772334E+15
Circumference	126536471.99869

Square

Length = n

Perimeter	80555620
Area	405575494599025
Diagonal	28480712.582343

Cube

Length = n

Surface area	2433452967594150
Volume	8.1678463560578E+21
Space diagonal	34881606.668803

Equilateral Triangle

Length = n

Perimeter	60416715
Area	1.756193407376E+14
Altitude	17440803.334401

Triangular Pyramid

Length = n

Surface area	1.756193407376E+14
Volume	9.6258992434305E+20
Height	9493570.8607811