20731385 is an odd 8-digits composite number following 20731384
and preceding 20731386 . In scientific notation, it is written as 2.0731385 × 10^7.
The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors.
There are 16585104 positive integers (up to 20731385) that are relatively prime to 20731385.
20731385 has 4 divisors, whose sum is 24877668
The reverse of 20731385 is 58313702
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million seven hundred thirty-one thousand three hundred eighty-five
Scientific notation
2.0731385 × 10^7
Engineering notation
2.0731385 × 10^6
Prime Factorization
5 × 4146277
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20731385
Product of the distinct prime numbers
The prime factorization of 20731385 is 5 × 4146277.
Since it has a total of 2 prime factors.
9 , 2 , 7 , 52 , 633 , 680 , 6166 , 4532 , 3478 , 32233 , 29715 , 696582 , 853312 , 466720 , 30598716 , 52931645 , 615641970 , 40733679 , 4101991627 , 3635645281
n×2
41462770
n×3
62194155
n×4
82925540
n×5
103656925
n÷2
10365692.5
n÷3
6910461.6666667
n÷3
5182846.25
n÷5
4146277
n2
429790324018225
n3
8.9101486764966E+21
n4
1.8471972261969E+29
n5
3.829495686722E+36
2 √n
4553.1730694099
3 √n
274.71103531081
4 √n
67.477204072264
5 √n
29.062011038169
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
-20731384
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 20731385 can be divided by 4 positive divisors.
The sum of these divisors (counting 20731385) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111000101010111111001
3
Ternary
1110000021010002
4
Quaternary
1033011113321
5
Quinary
20301401020
6
Senary
2020202345
8
Octal
117052771
10
Decimal
20731385
12
Duodecimal
6b393b5
16
Hexadecimal
13c55f9
20
Vigesimal
69b895
36
Base36
cccft
md5
1e1c26129faff6afec6a958c63010876
sha1
3ed76e69f992a62f6feedb8af264878a5f14526b
sha256
eb62c8d4878282e601b3aaa102780186b1fce4d5e5b9c4918ab50a5f73c9ab20
sha512
606edca578b2661dbd6eac8f0cf98c2e7b47c3b5814f2b9bf588256ea8e6245279eed139ded99a01576a1bad5051db91c7802fea8ce6cd2bcc534887fe49d4fc
ripemd-160
b1990deff3326a61bc773c4e1736bf402102d88d
Diameter
41462770
Circumference
130259133.62948
Area
1.3502261245196E+15
Volume
3.7322743499299E+22
Surface area
5.4009044980785E+15
Circumference
130259133.62948
Perimeter
82925540
Area
429790324018225
Diagonal
29318605.833778
Surface area
2578741944109350
Volume
8.9101486764966E+21
Space diagonal
35907812.131271
Perimeter
62194155
Area
1.8610466945026E+14
Altitude
17953906.065636
Surface area
1.8610466945026E+14
Volume
1.0500710917552E+21
Height
9772868.6112594