20168985 is an odd 8-digits composite number following 20168984
and preceding 20168986 . In scientific notation, it is written as 2.0168985 × 10^7.
The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors.
There are 10756784 positive integers (up to 20168985) that are relatively prime to 20168985.
20168985 has 4 divisors, whose sum is 21513600
The reverse of 20168985 is 58986102
Previous prime number is 15
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty million one hundred sixty-eight thousand nine hundred eighty-five
Scientific notation
2.0168985 × 10^7
Engineering notation
2.0168985 × 10^6
Prime Factorization
15 × 1344599
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20168985
Product of the distinct prime numbers
The prime factorization of 20168985 is 15 × 1344599.
Since it has a total of 2 prime factors.
4 , 8 , 14 , 81 , 994 , 885 , 6062 , 3794 , 15118 , 56444 , 815066 , 999141 , 4287874 , 2638648 , 2881710 , 55185211 , 146075576 , 246685805 , 9310382398 , 9479645629
n×2
40337970
n×3
60506955
n×4
80675940
n×5
100844925
n÷2
10084492.5
n÷3
6722995
n÷3
5042246.25
n÷5
4033797
n2
406787955930225
n3
8.2045001813374E+21
n4
1.6547644108989E+29
n5
3.3374918581954E+36
2 √n
4490.9893119445
3 √n
272.20411168022
4 √n
67.014843967173
5 √n
28.902593086817
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
-20168984
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 20168985 can be divided by 4 positive divisors.
The sum of these divisors (counting 20168985) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100111100000100011001
3
Ternary
1101221200122110
4
Quaternary
1030330010121
5
Quinary
20130401420
6
Senary
2000142533
8
Octal
114740431
10
Decimal
20168985
12
Duodecimal
6907a49
16
Hexadecimal
133c119
20
Vigesimal
661295
36
Base36
c0ahl
md5
264d25b0a5d859d5edde114d8bfe5204
sha1
d2877f1655d9201c1304182f5b65b855d6379e46
sha256
8bbc72e8f44e1653c32b9ac496088309a18ed58ad1af95bd885674b7fae4095d
sha512
869b823ed0f72a1fb15bfbe51160662b6f94b9923ecada70ce202f268c1343eddf0886f01d01843ae53fe88b37a8d0f565ac3d4209202fcef53ddf6ef53e0795
ripemd-160
f3cf3488ef6630b4345104ea8bf27d695d8effab
Diameter
40337970
Circumference
126725470.21273
Area
1.2779620539192E+15
Volume
3.4366929994754E+22
Surface area
5.1118482156768E+15
Circumference
126725470.21273
Perimeter
80675940
Area
406787955930225
Diagonal
28523252.1263
Surface area
2440727735581350
Volume
8.2045001813374E+21
Space diagonal
34933706.757095
Perimeter
60506955
Area
1.7614435189456E+14
Altitude
17466853.378547
Surface area
1.7614435189456E+14
Volume
9.6690961907832E+20
Height
9507750.7087665