20105865 is an odd 8-digits composite number following 20105864
and preceding 20105866 . In scientific notation, it is written as 2.0105865 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors.
There are 9897984 positive integers (up to 20105865) that are relatively prime to 20105865.
20105865 has 12 divisors, whose sum is 29489460
The reverse of 20105865 is 56850102
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 five thousand eight hundred sixty-five
Scientific notation
2.0105865 × 10^7
Engineering notation
2.0105865 × 10^6
Prime Factorization
3 × 65 × 3 × 34369
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
6701955
Product of the distinct prime numbers
The prime factorization of 20105865 is 3 × 65 × 3 × 34369.
Since it has a total of 4 prime factors.
7 , 10 , 26 , 47 , 336 , 408 , 2053 , 969 , 51635 , 93543 , 635661 , 764716 , 3600118 , 1328644 , 6339166 , 91549039 , 904775377 , 822635782 , 9005088755 , 3337940706
n×2
40211730
n×3
60317595
n×4
80423460
n×5
100529325
n÷2
10052932.5
n÷3
6701955
n÷3
5026466.25
n÷5
4021173
n2
404245807398225
n3
8.1277116303647E+21
n4
1.6341467279904E+29
n5
3.2855933503167E+36
2 √n
4483.9564003233
3 √n
271.91985546076
4 √n
66.962350618264
5 √n
28.884479932251
1 , 3 , 9 , 65 , 195 , 585 , 34369 , 103107 , 309321 , 2233985 , 6701955 , 20105865
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
-20105864
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 20105865 can be divided by 12 positive divisors.
The sum of these divisors (counting 20105865) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001100101100101010001001
3
Ternary
1101211111001200
4
Quaternary
1030230222021
5
Quinary
20121341430
6
Senary
1554534413
8
Octal
114545211
10
Decimal
20105865
12
Duodecimal
6897409
16
Hexadecimal
132ca89
20
Vigesimal
65d4d5
36
Base36
byxs9
md5
a9ecfe4598fd2087817dbe875981c13a
sha1
5ec5c9ae383c62c645ac6d848df294d3944623f3
sha256
7ef3ec7ff0b29da7774cadc2f64c6eda5de365a1e635aef9310bb365a7e123df
sha512
c2248fee5f16b33e5d1caa2b8283faaac83d250c480cd1aa6db61d3f107ffb570e51a54a1bb1e11aa5a6fa67810bf42717aef410dd149a0db062e6bd1f0ad85d
ripemd-160
49526bc3054f5c2bb8b34c34caba0083efb9c27e
Diameter
40211730
Circumference
126328875.55614
Area
1.2699756587667E+15
Volume
3.40452788646E+22
Surface area
5.079902635067E+15
Circumference
126328875.55614
Perimeter
80423460
Area
404245807398225
Diagonal
28433986.966243
Surface area
2425474844389350
Volume
8.1277116303647E+21
Space diagonal
34824379.710121
Perimeter
60317595
Area
1.7504356929011E+14
Altitude
17412189.85506
Surface area
1.7504356929011E+14
Volume
9.5786000155994E+20
Height
9477995.6554142