20789890 is an even 8-digits composite number following 20789889
and preceding 20789891 . In scientific notation, it is written as 2.0789890 × 10^7.
The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors.
There are 7559920 positive integers (up to 20789890) that are relatively prime to 20789890.
20789890 has 8 divisors, whose sum is 31752000
The reverse of 20789890 is 09898702
Previous prime number is 55
Is Prime? no
Number parity even
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty million seven hundred eighty-nine thousand eight hundred ninety
Scientific notation
2.0789890 × 10^7
Engineering notation
2.0789890 × 10^6
Prime Factorization
2 × 55 × 188999
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20789890
Product of the distinct prime numbers
The prime factorization of 20789890 is 2 × 55 × 188999.
Since it has a total of 3 prime factors.
6 , 4 , 15 , 12 , 115 , 856 , 9644 , 4945 , 3645 , 27554 , 870652 , 577870 , 5818251 , 5357216 , 96683515 , 39245647 , 876658306 , 700191880 , 4918179925 , 5769563225
n×2
41579780
n×3
62369670
n×4
83159560
n×5
103949450
n÷2
10394945
n÷3
6929963.3333333
n÷3
5197472.5
n÷5
4157978
n2
432219526212100
n3
8.9857964058017E+21
n4
1.8681371883901E+29
n5
3.883836665154E+36
2 √n
4559.5931836075
3 √n
274.96920867368
4 √n
67.524759781931
5 √n
29.078395441789
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
-20789889
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 20789890 can be divided by 8 positive divisors.
The sum of these divisors (counting 20789890) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111010011101010000010
3
Ternary
1110010020100221
4
Quaternary
1033103222002
5
Quinary
20310234030
6
Senary
2021333254
8
Octal
117235202
10
Decimal
20789890
12
Duodecimal
6b6722a
16
Hexadecimal
13d3a82
20
Vigesimal
69ieea
36
Base36
cdlky
md5
d1b29c52da3261decc5918f65d5bca5c
sha1
568134c59ffb50801fe07eb0a48010a5624c56cd
sha256
2f61587e14291d59d59896102131df17998f3b8c3efb9d7da228bc4782c39a35
sha512
e2ddcc9bebe0be009f3044499b86f41225ef44c0f12775bb7697a62cd445c80fc5f33db926206728273ba6885c95b643909806ace6efc893fffc05cfa3410ad4
ripemd-160
75be8d4dec5147ad7dc97a599c64d0bc5414f92c
Diameter
41579780
Circumference
130626731.38588
Area
1.357857688286E+15
Volume
3.7639615966827E+22
Surface area
5.431430753144E+15
Circumference
130626731.38588
Perimeter
83159560
Area
432219526212100
Diagonal
29401344.398245
Surface area
2593317157272600
Volume
8.9857964058017E+21
Space diagonal
36009145.763768
Perimeter
62369670
Area
1.8715654485568E+14
Altitude
18004572.881884
Surface area
1.8715654485568E+14
Volume
1.0589862621507E+21
Height
9800448.1327483