20215855 is an odd 8-digits composite number following 20215854
and preceding 20215856 . In scientific notation, it is written as 2.0215855 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 14702400 positive integers (up to 20215855) that are relatively prime to 20215855.
20215855 has 8 divisors, whose sum is 26464464
The reverse of 20215855 is 55851202
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million two hundred fifteen thousand eight hundred fifty-five
Scientific notation
2.0215855 × 10^7
Engineering notation
2.0215855 × 10^6
Prime Factorization
5 × 11 × 367561
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20215855
Product of the distinct prime numbers
The prime factorization of 20215855 is 5 × 11 × 367561.
Since it has a total of 3 prime factors.
8 , 7 , 51 , 68 , 588 , 699 , 146 , 5743 , 92222 , 48881 , 166318 , 56395 , 2170462 , 5514724 , 25002499 , 3374852 , 625829940 , 789827575 , 1606976191 , 7091272166
n×2
40431710
n×3
60647565
n×4
80863420
n×5
101079275
n÷2
10107927.5
n÷3
6738618.3333333
n÷3
5053963.75
n÷5
4043171
n2
408680793381025
n3
8.2618316602758E+21
n4
1.6701999087854E+29
n5
3.376451917702E+36
2 √n
4496.2045104733
3 √n
272.41480376793
4 √n
67.053743448619
5 √n
28.916013762849
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
-20215854
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 20215855 can be divided by 8 positive divisors.
The sum of these divisors (counting 20215855) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101000111100000101111
3
Ternary
1102001001221101
4
Quaternary
1031013200233
5
Quinary
20133401410
6
Senary
2001143531
8
Octal
115074057
10
Decimal
20215855
12
Duodecimal
692aba7
16
Hexadecimal
134782f
20
Vigesimal
666jcf
36
Base36
c1anj
md5
6a99caeeb19592beed43d31096301d01
sha1
24c997c6ae9113c7c0324aa4a032de1f42689087
sha256
61f0f5c1dbb2bae51925d0ac146151b43d03278d3e6efa1179393af1317a9ca6
sha512
3ecaa5edba7080608625672a43879d0f76de25eb62b3f3d6ea4202b345f0c25e8bb864efd032e7c556e011de18615ee0b1abab64ea4bfd68e4e0393b70fee577
ripemd-160
c13ff0bc38753993262cbc14451249362c6d297f
Diameter
40431710
Circumference
127019963.10807
Area
1.2839085781491E+15
Volume
3.4607079532157E+22
Surface area
5.1356343125963E+15
Circumference
127019963.10807
Perimeter
80863420
Area
408680793381025
Diagonal
28589536.315968
Surface area
2452084760286150
Volume
8.2618316602758E+21
Space diagonal
35014887.978445
Perimeter
60647565
Area
1.7696397455337E+14
Altitude
17507443.989223
Surface area
1.7696397455337E+14
Volume
9.7366619866712E+20
Height
9529845.438656