20008181 is an odd 8-digits composite number following 20008180
and preceding 20008182 . In scientific notation, it is written as 2.0008181 × 10^7.
The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors.
There are 19982700 positive integers (up to 20008181) that are relatively prime to 20008181.
20008181 has 4 divisors, whose sum is 20033664
The reverse of 20008181 is 18180002
Previous prime number is 811
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty million eight thousand one hundred eighty-one
Scientific notation
2.0008181 × 10^7
Engineering notation
2.0008181 × 10^6
Prime Factorization
811 × 24671
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20008181
Product of the distinct prime numbers
The prime factorization of 20008181 is 811 × 24671.
Since it has a total of 2 prime factors.
1 , 1 , 72 , 43 , 770 , 778 , 1188 , 6991 , 76136 , 84080 , 829487 , 217616 , 678534 , 2180163 , 94983135 , 11207988 , 463251757 , 710678254 , 1538561953 , 3243777713
n×2
40016362
n×3
60024543
n×4
80032724
n×5
100040905
n÷2
10004090.5
n÷3
6669393.6666667
n÷3
5002045.25
n÷5
4001636.2
n2
400327306928761
n3
8.0098212162732E+21
n4
1.6026195267283E+29
n5
3.2065501564915E+36
2 √n
4473.0505250891
3 √n
271.47876769838
4 √n
66.880868154422
5 √n
28.856358277593
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
-20008180
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 20008181 can be divided by 4 positive divisors.
The sum of these divisors (counting 20008181) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100010100110011110101
3
Ternary
1101122112001202
4
Quaternary
1030110303311
5
Quinary
20110230211
6
Senary
1552502245
8
Octal
114246365
10
Decimal
20008181
12
Duodecimal
684a985
16
Hexadecimal
1314cf5
20
Vigesimal
651091
36
Base36
bwuet
md5
0acd4e6398099a2ea58242001b972039
sha1
4fe9aaea2286150d02586ac40091a4d4d85d7dc0
sha256
7850130cc534c65a24f9af351e3f1481f5e21be929e25a2cd9fcd1007260b286
sha512
c3d844952817698194e69bb4d49d65210512c5a6d0f0921f2f5aadd00961745407d120dc496a777a2c9df81565beff9006203ef4d8d1f214b5ee3027d5584432
ripemd-160
42213cdc662c9f3b6339aa799b49564037262c88
Diameter
40016362
Circumference
125715108.88259
Area
1.2576653264788E+15
Volume
3.3551460652815E+22
Surface area
5.0306613059151E+15
Circumference
125715108.88259
Perimeter
80032724
Area
400327306928761
Diagonal
28295840.928616
Surface area
2401963841572566
Volume
8.0098212162732E+21
Space diagonal
34655186.059034
Perimeter
60024543
Area
1.7334680881446E+14
Altitude
17327593.029517
Surface area
1.7334680881446E+14
Volume
9.4396648301978E+20
Height
9431946.9762052