20130818 is an even 8-digits composite number following 20130817
and preceding 20130819 . In scientific notation, it is written as 2.0130818 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 10065408 positive integers (up to 20130818) that are relatively prime to 20130818.
20130818 has 4 divisors, whose sum is 30196230
The reverse of 20130818 is 81803102
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty million one hundred thirty thousand eight hundred eighteen
Scientific notation
2.0130818 × 10^7
Engineering notation
2.0130818 × 10^6
Prime Factorization
2 × 10065409
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20130818
Product of the distinct prime numbers
The prime factorization of 20130818 is 2 × 10065409.
Since it has a total of 2 prime factors.
9 , 3 , 86 , 26 , 258 , 530 , 9088 , 5093 , 97243 , 57398 , 414851 , 184520 , 5714339 , 4865189 , 26429167 , 91601131 , 772820330 , 686792411 , 8358364950 , 7448505680
n×2
40261636
n×3
60392454
n×4
80523272
n×5
100654090
n÷2
10065409
n÷3
6710272.6666667
n÷3
5032704.5
n÷5
4026163.6
n2
405249833349124
n3
8.1580106396815E+21
n4
1.6422742742949E+29
n5
3.3060324521913E+36
2 √n
4486.738013301
3 √n
272.03230044612
4 √n
66.983117375209
5 √n
28.891645969507
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
-20130817
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 20130818 can be divided by 4 positive divisors.
The sum of these divisors (counting 20130818) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110010110000000010
3
Ternary
1101212202021212
4
Quaternary
1030302300002
5
Quinary
20123141233
6
Senary
1555250122
8
Octal
114626002
10
Decimal
20130818
12
Duodecimal
68a9942
16
Hexadecimal
1332c02
20
Vigesimal
65g70i
36
Base36
bzh1e
md5
e48e34cc2663af7430ffad22ad5e01f2
sha1
f9b3dd648774bdfed407588eda6f0a194864db4b
sha256
fadf5e69d8a950e2e8d6c7d2eddc47d0efe5a4effa2cd93687326d56078e784c
sha512
ff19f05f199f539effc34b8b1d95d97d3e5c95eea4baca42b898bd72e905a18e64a14c911020f97d32753ef60ce8bbc891cf74fbc905321fae971c05e514645a
ripemd-160
8518bce5ed181da494999ce6ec89cf6afa64f4ed
Diameter
40261636
Circumference
126485659.87911
Area
1.2731298993181E+15
Volume
3.4172195058041E+22
Surface area
5.0925195972724E+15
Circumference
126485659.87911
Perimeter
80523272
Area
405249833349124
Diagonal
28469275.837264
Surface area
2431499000094744
Volume
8.1580106396815E+21
Space diagonal
34867599.573922
Perimeter
60392454
Area
1.7547832527988E+14
Altitude
17433799.786961
Surface area
1.7547832527988E+14
Volume
9.614307740518E+20
Height
9489758.6124215