20787913 is an odd 8-digits prime number following 20787912
and preceding 20787914 . In scientific notation, it is written as 2.0787913 × 10^7.
The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors.
There are 20787912 positive integers (up to 20787913) that are relatively prime to 20787913.
20787913 has 2 divisors, whose sum is 20787914
The reverse of 20787913 is 31978702
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty million seven hundred eighty-seven thousand nine hundred thirteen
Scientific notation
2.0787913 × 10^7
Engineering notation
2.0787913 × 10^6
Prime Factorization
20787913
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20787913
Product of the distinct prime numbers
The prime factorization of 20787913 is 20787913.
Since it has a total of 1 prime factors.
8 , 10 , 72 , 15 , 987 , 637 , 7016 , 3690 , 12628 , 63991 , 425787 , 996596 , 1346331 , 9720655 , 8675654 , 82404213 , 546757002 , 348737090 , 5306203755 , 3134329454
n×2
41575826
n×3
62363739
n×4
83151652
n×5
103939565
n÷2
10393956.5
n÷3
6929304.3333333
n÷3
5196978.25
n÷5
4157582.6
n2
432137326895569
n3
8.9832331555576E+21
n4
1.8674266929645E+29
n5
3.8819903627223E+36
2 √n
4559.3763827962
3 √n
274.96049239608
4 √n
67.523154419771
5 √n
29.07784238283
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20787914
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10393957
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4559.3764924603
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999037903
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20787913 can be divided by 2 positive divisors.
The sum of these divisors (counting 20787913) is 20787914, the average is 10393957.
Base
System
Value
2
Binary
1001111010011001011001001
3
Ternary
1110010010122201
4
Quaternary
1033103023021
5
Quinary
20310203123
6
Senary
2021320201
8
Octal
117231311
10
Decimal
20787913
12
Duodecimal
6b66061
16
Hexadecimal
13d32c9
20
Vigesimal
69i9fd
36
Base36
cdk21
md5
5aebbe68767be88ff9c070587ca76622
sha1
faa5318aa2c322b6b5b0f3f114cf98aff3f14cba
sha256
a671f212e76a7bb2b67aaae92248b5f180a52742b4c06fbbc7a8d6a71b089674
sha512
fb24aa6909c74209fda90ba673157f6e6061235f16d2666bab86ccf091bb82b53a3c2a6bcd630f44a7c80f82d1c8e04829c0f96d7b323a28efc64d5a7b4c5ce8
ripemd-160
9a594cd42595593c30367cac82db975a2aa033a6
Diameter
41575826
Circumference
130614309.52853
Area
1.3575994515171E+15
Volume
3.7628879049312E+22
Surface area
5.4303978060682E+15
Circumference
130614309.52853
Perimeter
83151652
Area
432137326895569
Diagonal
29398548.498032
Surface area
2592823961373414
Volume
8.9832331555576E+21
Space diagonal
36005721.499322
Perimeter
62363739
Area
1.8712095150753E+14
Altitude
18002860.749661
Surface area
1.8712095150753E+14
Volume
1.0586841802124E+21
Height
9799516.1660107