20172645 is an odd 8-digits composite number following 20172644
and preceding 20172646 . In scientific notation, it is written as 2.0172645 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors.
There are 10758096 positive integers (up to 20172645) that are relatively prime to 20172645.
20172645 has 12 divisors, whose sum is 29355872
The reverse of 20172645 is 54627102
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million one hundred seventy-two thousand six hundred forty-five
Scientific notation
2.0172645 × 10^7
Engineering notation
2.0172645 × 10^6
Prime Factorization
135 × 3 × 3 × 16603
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
6724215
Product of the distinct prime numbers
The prime factorization of 20172645 is 135 × 3 × 3 × 16603.
Since it has a total of 4 prime factors.
9 , 1 , 85 , 13 , 46 , 543 , 4171 , 6868 , 64760 , 19636 , 927170 , 639215 , 1876726 , 5990924 , 4419486 , 64683528 , 615652268 , 321503891 , 9279055307 , 464486890
n×2
40345290
n×3
60517935
n×4
80690580
n×5
100863225
n÷2
10086322.5
n÷3
6724215
n÷3
5043161.25
n÷5
4034529
n2
406935606296025
n3
8.2089675236695E+21
n4
1.6559658767151E+29
n5
3.3405211763088E+36
2 √n
4491.3967760598
3 √n
272.22057601547
4 √n
67.017884001659
5 √n
28.903641982565
1 , 3 , 9 , 135 , 405 , 1215 , 16603 , 49809 , 149427 , 2241405 , 6724215 , 20172645
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20172644
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20172645 can be divided by 12 positive divisors.
The sum of these divisors (counting 20172645) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001100111100111101100101
3
Ternary
1101221212200000
4
Quaternary
1030330331211
5
Quinary
20131011040
6
Senary
2000211513
8
Octal
114747545
10
Decimal
20172645
12
Duodecimal
6909b99
16
Hexadecimal
133cf65
20
Vigesimal
661bc5
36
Base36
c0db9
md5
2ad2f0416259c90f81db5b91adeea806
sha1
30bdfbee0278db7d5e0b4a5dc475f63d1373f950
sha256
df06bfd866b032bf8a8ce4100719e1ac23a9adcdd5938010b79f4213e3fb93ab
sha512
a0f7e4f4e60fdbbcdc177436f6778c816f68b060a179849ca67286b8092b0b2b4191263711fd2dbb32f2a7f4e72b661dca5cef0ac885a2c489a760190e0a5637
ripemd-160
ee77294df6bf98b87fcf8567e5d250ac43438a37
Diameter
40345290
Circumference
126748466.67095
Area
1.2784259112237E+15
Volume
3.4385642754556E+22
Surface area
5.1137036448948E+15
Circumference
126748466.67095
Perimeter
80690580
Area
406935606296025
Diagonal
28528428.147938
Surface area
2441613637776150
Volume
8.2089675236695E+21
Space diagonal
34940046.06305
Perimeter
60517935
Area
1.7620828637839E+14
Altitude
17470023.031525
Surface area
1.7620828637839E+14
Volume
9.6743610042114E+20
Height
9509476.0493126