20131918 is an even 8-digits composite number following 20131917
and preceding 20131919 . In scientific notation, it is written as 2.0131918 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 10059504 positive integers (up to 20131918) that are relatively prime to 20131918.
20131918 has 8 divisors, whose sum is 30217248
The reverse of 20131918 is 81913102
Previous prime number is 3823
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million one hundred thirty-one thousand nine hundred eighteen
Scientific notation
2.0131918 × 10^7
Engineering notation
2.0131918 × 10^6
Prime Factorization
2 × 3823 × 2633
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20131918
Product of the distinct prime numbers
The prime factorization of 20131918 is 2 × 3823 × 2633.
Since it has a total of 3 prime factors.
2 , 1 , 12 , 18 , 19 , 748 , 531 , 7471 , 99665 , 4273 , 766292 , 379943 , 9749945 , 8098801 , 91694709 , 89273753 , 295228932 , 251573160 , 5855996482 , 6528389573
n×2
40263836
n×3
60395754
n×4
80527672
n×5
100659590
n÷2
10065959
n÷3
6710639.3333333
n÷3
5032979.5
n÷5
4026383.6
n2
405294122358724
n3
8.1593480372078E+21
n4
1.6426332561853E+29
n5
3.3069358017595E+36
2 √n
4486.8605951155
3 √n
272.03725520554
4 √n
66.984032389186
5 √n
28.891961705469
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
-20131917
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 20131918 can be divided by 8 positive divisors.
The sum of these divisors (counting 20131918) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100110011000001001110
3
Ternary
1101212210210121
4
Quaternary
1030303001032
5
Quinary
20123210133
6
Senary
1555255154
8
Octal
114630116
10
Decimal
20131918
12
Duodecimal
68aa4ba
16
Hexadecimal
133304e
20
Vigesimal
65g9fi
36
Base36
bzhvy
md5
61d07eb005a4e9eca6de77ea4a37a089
sha1
0fab0d5b9a21c6959f67c2629cf563b0eefa27c4
sha256
c6a6c1e9a1e8cbeca919fd1ce35c2d96c1d5312bfbe80465b706ea6c2e0e5854
sha512
188d759b987d46603c0fd8a0cfc6d7bc84d32b94eb8859866d41370f1432563be36d6cee8e21326aa1783f67dda29aa8a3462ebcec0dc3ebfd0ede525a21607a
ripemd-160
8cf6fb480db62cb716adb977bfc74547d70a8c7e
Diameter
40263836
Circumference
126492571.38294
Area
1.2732690373453E+15
Volume
3.4177797135699E+22
Surface area
5.0930761493812E+15
Circumference
126492571.38294
Perimeter
80527672
Area
405294122358724
Diagonal
28470831.472183
Surface area
2431764734152344
Volume
8.1593480372078E+21
Space diagonal
34869504.82981
Perimeter
60395754
Area
1.7549750298359E+14
Altitude
17434752.414905
Surface area
1.7549750298359E+14
Volume
9.615883878618E+20
Height
9490277.1573943