20497789 is an odd 8-digits composite number following 20497788
and preceding 20497790 . In scientific notation, it is written as 2.0497789 × 10^7.
The sum of its digits is 46. It has a total of 4 prime factors and 16 positive divisors.
There are 17340480 positive integers (up to 20497789) that are relatively prime to 20497789.
20497789 has 16 divisors, whose sum is 23994880
The reverse of 20497789 is 98779402
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty million four hundred ninety-seven thousand seven hundred eighty-nine
Scientific notation
2.0497789 × 10^7
Engineering notation
2.0497789 × 10^6
Prime Factorization
19 × 13 × 31 × 2677
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20497789
Product of the distinct prime numbers
The prime factorization of 20497789 is 19 × 13 × 31 × 2677.
Since it has a total of 4 prime factors.
7 , 5 , 28 , 85 , 378 , 146 , 3254 , 6940 , 39993 , 68808 , 417295 , 563989 , 6187510 , 2124766 , 7835280 , 95232831 , 204566283 , 412526938 , 9608484841 , 2319061674
n×2
40995578
n×3
61493367
n×4
81991156
n×5
102488945
n÷2
10248894.5
n÷3
6832596.3333333
n÷3
5124447.25
n÷5
4099557.8
n2
420159353888521
n3
8.6123377823832E+21
n4
1.7653388266002E+29
n5
3.6185542781158E+36
2 √n
4527.4483983807
3 √n
273.67534407005
4 √n
67.286316576112
5 √n
28.996221167487
1 , 13 , 19 , 31 , 247 , 403 , 589 , 2677 , 7657 , 34801 , 50863 , 82987 , 661219 , 1078831 , 1576753 , 20497789
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20497788
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20497789 can be divided by 16 positive divisors.
The sum of these divisors (counting 20497789) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001110001100010101111101
3
Ternary
1102120101200101
4
Quaternary
1032030111331
5
Quinary
20221412124
6
Senary
2011201101
8
Octal
116142575
10
Decimal
20497789
12
Duodecimal
6a46191
16
Hexadecimal
138c57d
20
Vigesimal
682499
36
Base36
c7c71
md5
4e1bc5af418a1d9504ce3a1e03e32cf4
sha1
bc173a6a4eca8eecac14b2f76bcb82809a88b20e
sha256
074c7bf40700d54a918878a3aca42ebea6e45b0b3b7c1c3d996a049682f22d6a
sha512
bafe991cff04554ea4e4d7928d015b5e2f76d9feef840d69c8f1a3f6484c015b8144111c7fa6dc19a41dd4425cb31cbba0e13ffabc354118360235a733bce859
ripemd-160
eb5490dba9edeffbfba56c78bfee93c3e6679dcf
Diameter
40995578
Circumference
128791406.67447
Area
1.3199695395132E+15
Volume
3.6075276143159E+22
Surface area
5.2798781580528E+15
Circumference
128791406.67447
Perimeter
81991156
Area
420159353888521
Diagonal
28988251.202462
Surface area
2520956123331126
Volume
8.6123377823832E+21
Space diagonal
35503211.990826
Perimeter
61493367
Area
1.8193433705256E+14
Altitude
17751605.995413
Surface area
1.8193433705256E+14
Volume
1.0149737412987E+21
Height
9662750.4008207