20861009 is an odd 8-digits composite number following 20861008
and preceding 20861010 . In scientific notation, it is written as 2.0861009 × 10^7.
The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors.
There are 19222416 positive integers (up to 20861009) that are relatively prime to 20861009.
20861009 has 8 divisors, whose sum is 22505280
The reverse of 20861009 is 90016802
Previous prime number is 787
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty million eight hundred sixty-one thousand nine
Scientific notation
2.0861009 × 10^7
Engineering notation
2.0861009 × 10^6
Prime Factorization
13 × 787 × 2039
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20861009
Product of the distinct prime numbers
The prime factorization of 20861009 is 13 × 787 × 2039.
Since it has a total of 3 prime factors.
7 , 10 , 6 , 40 , 703 , 310 , 1389 , 6658 , 45640 , 62313 , 661358 , 407674 , 7488476 , 6706208 , 59751234 , 64543671 , 412285524 , 775488361 , 3261971501 , 3540507878
n×2
41722018
n×3
62583027
n×4
83444036
n×5
104305045
n÷2
10430504.5
n÷3
6953669.6666667
n÷3
5215252.25
n÷5
4172201.8
n2
435181696498081
n3
9.0783292872817E+21
n4
1.8938310896695E+29
n5
3.9507227406075E+36
2 √n
4567.3853570725
3 √n
275.28239421102
4 √n
67.582433790686
5 √n
29.09826281425
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
-20861008
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 20861009 can be divided by 8 positive divisors.
The sum of these divisors (counting 20861009) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111100101000001010001
3
Ternary
1110020211220222
4
Quaternary
1033211001101
5
Quinary
20320023014
6
Senary
2023042425
8
Octal
117450121
10
Decimal
20861009
12
Duodecimal
6ba0415
16
Hexadecimal
13e5051
20
Vigesimal
6a7ca9
36
Base36
cf4gh
md5
5c6b66f4e8220683ff59bfb5c60345c9
sha1
1b22c0e5e10e61cf8578227bb473c1defa7e4bad
sha256
751449c9c26a035aec15b857715f4d527de2aa0f48387bbafed8a83ada0c8645
sha512
9c43b56380a16d772e2a7db73768500df3dc0e950acea50108c51828529b4eb322fda4d1fc676ffa78ba7e343af4eb6e2b9ec04b6e32d1314457a5ef73f0c412
ripemd-160
656b728b830dd6e847f06ea570667d85acead406
Diameter
41722018
Circumference
131073585.24174
Area
1.3671636206951E+15
Volume
3.8027216794391E+22
Surface area
5.4686544827805E+15
Circumference
131073585.24174
Perimeter
83444036
Area
435181696498081
Diagonal
29501921.852587
Surface area
2611090178988486
Volume
9.0783292872817E+21
Space diagonal
36132327.485152
Perimeter
62583027
Area
1.8843920221467E+14
Altitude
18066163.742576
Surface area
1.8843920221467E+14
Volume
1.0698913668136E+21
Height
9833973.9508624