20215989 is an odd 8-digits composite number following 20215988
and preceding 20215990 . In scientific notation, it is written as 2.0215989 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 13457472 positive integers (up to 20215989) that are relatively prime to 20215989.
20215989 has 8 divisors, whose sum is 22495320
The reverse of 20215989 is 98951202
Previous prime number is 953
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty million two hundred fifteen thousand nine hundred eighty-nine
Scientific notation
2.0215989 × 10^7
Engineering notation
2.0215989 × 10^6
Prime Factorization
9 × 953 × 2357
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20215989
Product of the distinct prime numbers
The prime factorization of 20215989 is 9 × 953 × 2357.
Since it has a total of 3 prime factors.
4 , 9 , 72 , 6 , 123 , 318 , 792 , 4535 , 72994 , 20887 , 720867 , 718162 , 6761147 , 1573036 , 29275778 , 99083452 , 630841621 , 665723707 , 9033437717 , 239212814
n×2
40431978
n×3
60647967
n×4
80863956
n×5
101079945
n÷2
10107994.5
n÷3
6738663
n÷3
5053997.25
n÷5
4043197.8
n2
408686211248121
n3
8.2619959510437E+21
n4
1.6702441926434E+29
n5
3.3765638225794E+36
2 √n
4496.219411906
3 √n
272.41540566354
4 √n
67.053854564119
5 √n
28.916052096479
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
-20215988
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 20215989 can be divided by 8 positive divisors.
The sum of these divisors (counting 20215989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101000111100010110101
3
Ternary
1102001002010100
4
Quaternary
1031013202311
5
Quinary
20133402424
6
Senary
2001144313
8
Octal
115074265
10
Decimal
20215989
12
Duodecimal
692b099
16
Hexadecimal
13478b5
20
Vigesimal
666jj9
36
Base36
c1ar9
md5
7eb21987e6172284f53cf1783104dea7
sha1
a0d75858c83f759fc70b147093105b4b2cd784dc
sha256
3b2f162e9bfb7c8420aeb1f0e3157f54ed9186b5dc01d4eeaf3809e96f018ebd
sha512
61d521d68ad450c2dc15a3c1a832753f8829bae3660c35a231b2f094dde40786aa9531c17216bfa1eda58e06a16fba97d1072f891f90c1340a7f9f39f77d105e
ripemd-160
285d49a8b69f6b230d6b430973134447ecd72f87
Diameter
40431978
Circumference
127020805.0549
Area
1.2839255988805E+15
Volume
3.4607767711717E+22
Surface area
5.1357023955222E+15
Circumference
127020805.0549
Perimeter
80863956
Area
408686211248121
Diagonal
28589725.820585
Surface area
2452117267488726
Volume
8.2619959510437E+21
Space diagonal
35015120.073254
Perimeter
60647967
Area
1.7696632055864E+14
Altitude
17507560.036627
Surface area
1.7696632055864E+14
Volume
9.736855605198E+20
Height
9529908.6068618