20787213 is an odd 8-digits composite number following 20787212
and preceding 20787214 . In scientific notation, it is written as 2.0787213 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 13858140 positive integers (up to 20787213) that are relatively prime to 20787213.
20787213 has 4 divisors, whose sum is 27716288
The reverse of 20787213 is 31278702
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million seven hundred eighty-seven thousand two hundred thirteen
Scientific notation
2.0787213 × 10^7
Engineering notation
2.0787213 × 10^6
Prime Factorization
3 × 6929071
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20787213
Product of the distinct prime numbers
The prime factorization of 20787213 is 3 × 6929071.
Since it has a total of 2 prime factors.
7 , 8 , 56 , 24 , 585 , 610 , 4260 , 4566 , 20975 , 17680 , 702222 , 83915 , 6678047 , 7777720 , 92013985 , 32514270 , 827414780 , 501293602 , 1214637679 , 7709052810
n×2
41574426
n×3
62361639
n×4
83148852
n×5
103936065
n÷2
10393606.5
n÷3
6929071
n÷3
5196803.25
n÷5
4157442.6
n2
432108224307369
n3
8.9823256977291E+21
n4
1.8671751751407E+29
n5
3.8813368073962E+36
2 √n
4559.2996172658
3 √n
274.95740607527
4 √n
67.52258597881
5 √n
29.077646550148
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
-20787212
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 20787213 can be divided by 4 positive divisors.
The sum of these divisors (counting 20787213) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111010011000000001101
3
Ternary
1110010002200210
4
Quaternary
1033103000031
5
Quinary
20310142323
6
Senary
2021313033
8
Octal
117230015
10
Decimal
20787213
12
Duodecimal
6b65779
16
Hexadecimal
13d300d
20
Vigesimal
69i80d
36
Base36
cdjil
md5
a63494b3c1d4a8d71dfb7fb8f78df551
sha1
33b90cc9da03d20612902f09b4614bed45b118b7
sha256
29a21979515408cb12986fc56864fa5f5182c87a523684425e19a4a950435784
sha512
196ff89d9aea9514d7df772efb2fb0c53938e21c7c073b5bffcd9936cc5da7de57e4ffa36a597031f70bce21bb5a4ea34f5482c3312bead5dca733afdccf4737
ripemd-160
a8497c5ef72c65757d0fc6a4e534a68a97af8fbe
Diameter
41574426
Circumference
130609911.29881
Area
1.3575080230398E+15
Volume
3.7625077898849E+22
Surface area
5.430032092159E+15
Circumference
130609911.29881
Perimeter
83148852
Area
432108224307369
Diagonal
29397558.548538
Surface area
2592649345844214
Volume
8.9823256977291E+21
Space diagonal
36004509.063756
Perimeter
62361639
Area
1.8710834971718E+14
Altitude
18002254.531878
Surface area
1.8710834971718E+14
Volume
1.0585772352817E+21
Height
9799186.1828461