20189989 is an odd 8-digits composite number following 20189988
and preceding 20189990 . In scientific notation, it is written as 2.0189989 × 10^7.
The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors.
There are 19083600 positive integers (up to 20189989) that are relatively prime to 20189989.
20189989 has 8 divisors, whose sum is 21301280
The reverse of 20189989 is 98998102
Previous prime number is 571
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty million one hundred eighty-nine thousand nine hundred eighty-nine
Scientific notation
2.0189989 × 10^7
Engineering notation
2.0189989 × 10^6
Prime Factorization
19 × 571 × 1861
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20189989
Product of the distinct prime numbers
The prime factorization of 20189989 is 19 × 571 × 1861.
Since it has a total of 3 prime factors.
6 , 10 , 52 , 80 , 612 , 375 , 1617 , 1688 , 13441 , 35685 , 638058 , 350877 , 7268416 , 790506 , 39977676 , 33512138 , 679981279 , 461311807 , 2167998477 , 2300686072
n×2
40379978
n×3
60569967
n×4
80759956
n×5
100949945
n÷2
10094994.5
n÷3
6729996.3333333
n÷3
5047497.25
n÷5
4037997.8
n2
407635655820121
n3
8.230159407016E+21
n4
1.661668278959E+29
n5
3.3549064273831E+36
2 √n
4493.3271636951
3 √n
272.29857010431
4 √n
67.032284488111
5 √n
28.908610418297
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
-20189988
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 20189989 can be divided by 8 positive divisors.
The sum of these divisors (counting 20189989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101000001001100100101
3
Ternary
1101222202110101
4
Quaternary
1031001030211
5
Quinary
20132034424
6
Senary
2000424101
8
Octal
115011445
10
Decimal
20189989
12
Duodecimal
6918031
16
Hexadecimal
1341325
20
Vigesimal
663ej9
36
Base36
c0qp1
md5
20460c2e3a2c49349957ae14ed0cdd4c
sha1
4676b349a6c86bfb202142ac2d3318466216b708
sha256
1bfeaeb45c127d4c62a375912fdcc48b5919d9d86a34099dffc6aa9834f04ddc
sha512
e4814a5010827559d52e1ed834d44e266c59018fade67144efb7e5bfc36e85c0334c548ba6b8630e7c8c2e1603220fc17deb98db26e426a8151984f0574e5a2e
ripemd-160
7e55bd3b22720712041ededd1ace5d851d088f04
Diameter
40379978
Circumference
126857442.23692
Area
1.2806251816657E+15
Volume
3.4474411107939E+22
Surface area
5.122500726663E+15
Circumference
126857442.23692
Perimeter
80759956
Area
407635655820121
Diagonal
28552956.267964
Surface area
2445813934920726
Volume
8.230159407016E+21
Space diagonal
34970086.752257
Perimeter
60569967
Area
1.7651141671428E+14
Altitude
17485043.376128
Surface area
1.7651141671428E+14
Volume
9.6993358782455E+20
Height
9517652.0893212