20421817 is an odd 8-digits composite number following 20421816
and preceding 20421818 . In scientific notation, it is written as 2.0421817 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 18340992 positive integers (up to 20421817) that are relatively prime to 20421817.
20421817 has 8 divisors, whose sum is 22587656
The reverse of 20421817 is 71812402
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million four hundred twenty-one thousand eight hundred seventeen
Scientific notation
2.0421817 × 10^7
Engineering notation
2.0421817 × 10^6
Prime Factorization
13 × 37 × 42457
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20421817
Product of the distinct prime numbers
The prime factorization of 20421817 is 13 × 37 × 42457.
Since it has a total of 3 prime factors.
7 , 5 , 18 , 85 , 46 , 825 , 6199 , 5447 , 58590 , 30686 , 266050 , 343224 , 6392895 , 6698962 , 69809423 , 48027245 , 148130108 , 52626637 , 1105164735 , 8908597370
n×2
40843634
n×3
61265451
n×4
81687268
n×5
102109085
n÷2
10210908.5
n÷3
6807272.3333333
n÷3
5105454.25
n÷5
4084363.4
n2
417050609581489
n3
8.5169312286116E+21
n4
1.7393121095229E+29
n5
3.5519913606561E+36
2 √n
4519.0504533585
3 √n
273.33681319517
4 √n
67.223883057724
5 √n
28.974695196216
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
-20421816
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 20421817 can be divided by 8 positive divisors.
The sum of these divisors (counting 20421817) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101111001110010111001
3
Ternary
1102102112110121
4
Quaternary
1031321302321
5
Quinary
20211444232
6
Senary
2005413241
8
Octal
115716271
10
Decimal
20421817
12
Duodecimal
6a0a221
16
Hexadecimal
1379cb9
20
Vigesimal
67ceah
36
Base36
c5pkp
md5
f160fe1c2eff844f393b4df829889049
sha1
31ddf696b5ec13a65058bd06e1468baeb94b1b44
sha256
cb896baf9ad15500ac2c9e8c36cf4145e80f0f50eff5a1da9b6af189cb544052
sha512
d108d8b4d197950b921a6cf309152af7fc9ddf7b42d936dcd97ffa77c99078d17decdf706c77eac095d2f3a84b97188dfcf68492580541d0bf86e63c2d28cc4d
ripemd-160
df5f074b00fd78b830eeaf4ac5fa975bb45702ac
Diameter
40843634
Circumference
128314060.52031
Area
1.3102031312364E+15
Volume
3.5675638105248E+22
Surface area
5.2408125249454E+15
Circumference
128314060.52031
Perimeter
81687268
Area
417050609581489
Diagonal
28880810.569701
Surface area
2502303657488934
Volume
8.5169312286116E+21
Space diagonal
35371624.626874
Perimeter
61265451
Area
1.8058821128068E+14
Altitude
17685812.313437
Surface area
1.8058821128068E+14
Volume
1.0037299711085E+21
Height
9626936.8565671