20731257 is an odd 8-digits composite number following 20731256
and preceding 20731258 . In scientific notation, it is written as 2.0731257 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 13219800 positive integers (up to 20731257) that are relatively prime to 20731257.
20731257 has 8 divisors, whose sum is 24036480
The reverse of 20731257 is 75213702
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million seven hundred thirty-one thousand two hundred fifty-seven
Scientific notation
2.0731257 × 10^7
Engineering notation
2.0731257 × 10^6
Prime Factorization
9 × 23 × 100151
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20731257
Product of the distinct prime numbers
The prime factorization of 20731257 is 9 × 23 × 100151.
Since it has a total of 3 prime factors.
1 , 2 , 90 , 67 , 216 , 819 , 2130 , 6432 , 90055 , 97516 , 150237 , 311400 , 6666061 , 2836602 , 19961823 , 8661982 , 120837846 , 700781103 , 1995641289 , 7637506655
n×2
41462514
n×3
62193771
n×4
82925028
n×5
103656285
n÷2
10365628.5
n÷3
6910419
n÷3
5182814.25
n÷5
4146251.4
n2
429785016800049
n3
8.9099836380311E+21
n4
1.8471516066582E+29
n5
3.8293774675594E+36
2 √n
4553.1590132566
3 √n
274.71046993478
4 √n
67.477099917354
5 √n
29.061975151067
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20731256
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20731257 can be divided by 8 positive divisors.
The sum of these divisors (counting 20731257) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111000101010101111001
3
Ternary
1110000020221100
4
Quaternary
1033011111321
5
Quinary
20301400012
6
Senary
2020202013
8
Octal
117052571
10
Decimal
20731257
12
Duodecimal
6b39309
16
Hexadecimal
13c5579
20
Vigesimal
69b82h
36
Base36
cccc9
md5
55f958cb8dbb6b8753c1f28a012808fb
sha1
4c4a137ed1c69365376b0637d339163d06a98011
sha256
8c642aab31ebe32f6a8ade12cb0fc0eb89c5c2b49ddf5fc72701ab2b11f9fb77
sha512
e3c1ab8b8ba7690e6ac225acca77b47f0efa55680898f1f1a773e13f7e42d1e7e598a11309256f1eb9c25674ccc95d31d23366c25940109c5ee408332356d478
ripemd-160
65284539b3adaac86c6630d305b05b872c1fc203
Diameter
41462514
Circumference
130258329.38176
Area
1.350209451402E+15
Volume
3.7322052187792E+22
Surface area
5.400837805608E+15
Circumference
130258329.38176
Perimeter
82925028
Area
429785016800049
Diagonal
29318424.814442
Surface area
2578710100800294
Volume
8.9099836380311E+21
Space diagonal
35907590.428768
Perimeter
62193771
Area
1.8610237135738E+14
Altitude
17953795.214384
Surface area
1.8610237135738E+14
Volume
1.0500516417855E+21
Height
9772808.2714807