20138931 is an odd 8-digits composite number following 20138930
and preceding 20138932 . In scientific notation, it is written as 2.0138931 × 10^7.
The sum of its digits is 27. It has a total of 2 prime factors and 4 positive divisors.
There are 12636096 positive integers (up to 20138931) that are relatively prime to 20138931.
20138931 has 4 divisors, whose sum is 20270712
The reverse of 20138931 is 13983102
Previous prime number is 153
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million one hundred thirty-eight thousand nine hundred thirty-one
Scientific notation
2.0138931 × 10^7
Engineering notation
2.0138931 × 10^6
Prime Factorization
153 × 131627
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20138931
Product of the distinct prime numbers
The prime factorization of 20138931 is 153 × 131627.
Since it has a total of 2 prime factors.
9 , 1 , 59 , 23 , 846 , 533 , 9399 , 7221 , 88246 , 3121 , 598588 , 802363 , 3393881 , 3023734 , 53653370 , 82907324 , 439053977 , 300556934 , 2121098535 , 2422425725
n×2
40277862
n×3
60416793
n×4
80555724
n×5
100694655
n÷2
10069465.5
n÷3
6712977
n÷3
5034732.75
n÷5
4027786.2
n2
405576541822761
n3
8.1678779909872E+21
n4
1.6449233127691E+29
n5
3.3126997096148E+36
2 √n
4487.6420311785
3 √n
272.06883980643
4 √n
66.989865137784
5 √n
28.893974341326
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
-20138930
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 20138931 can be divided by 4 positive divisors.
The sum of these divisors (counting 20138931) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110100101110110011
3
Ternary
1101220011102100
4
Quaternary
1030310232303
5
Quinary
20123421211
6
Senary
1555351443
8
Octal
114645663
10
Decimal
20138931
12
Duodecimal
68b2583
16
Hexadecimal
1334bb3
20
Vigesimal
65h76b
36
Base36
bznar
md5
f24ef48c88fc0ac305d151adf9a3579f
sha1
3db20e02c6e0415695290126f9771a9885830756
sha256
42d7188f97125d523d9cabe3940c584ea947616211f7737699880ded29aa0d2e
sha512
70202fb85d9580a014e6ff26319bb6248737cf110d0feff8f39b03e4d5b1d09c75d795c6b4df75cf8bcf9aa3d3e1110794da76b4b1b37e32f160e15eadecf5a2
ripemd-160
df82101bcc561be0efe753ad1c41e75f66524d48
Diameter
40277862
Circumference
126536635.3615
Area
1.2741562842587E+15
Volume
3.4213527322538E+22
Surface area
5.096625137035E+15
Circumference
126536635.3615
Perimeter
80555724
Area
405576541822761
Diagonal
28480749.351896
Surface area
2433459250936566
Volume
8.1678779909872E+21
Space diagonal
34881651.702124
Perimeter
60416793
Area
1.7561979419878E+14
Altitude
17440825.851062
Surface area
1.7561979419878E+14
Volume
9.6259365255523E+20
Height
9493583.1172987