20900918 is an even 8-digits composite number following 20900917
and preceding 20900919 . In scientific notation, it is written as 2.0900918 × 10^7.
The sum of its digits is 29. It has a total of 4 prime factors and 16 positive divisors.
There are 10121760 positive integers (up to 20900918) that are relatively prime to 20900918.
20900918 has 16 divisors, whose sum is 32353584
The reverse of 20900918 is 81900902
Previous prime number is 61
Is Prime? no
Number parity even
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million nine hundred thousand nine hundred eighteen
Scientific notation
2.0900918 × 10^7
Engineering notation
2.0900918 × 10^6
Prime Factorization
2 × 67 × 61 × 2557
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20900918
Product of the distinct prime numbers
The prime factorization of 20900918 is 2 × 67 × 61 × 2557.
Since it has a total of 4 prime factors.
7 , 3 , 86 , 95 , 549 , 33 , 459 , 9903 , 29048 , 29961 , 89294 , 116383 , 70861 , 6067176 , 77192699 , 7095306 , 383333399 , 106007973 , 6127463489 , 6853731351
n×2
41801836
n×3
62702754
n×4
83603672
n×5
104504590
n÷2
10450459
n÷3
6966972.6666667
n÷3
5225229.5
n÷5
4180183.6
n2
436848373242724
n3
9.1305320275796E+21
n4
1.9083650120481E+29
n5
3.9886580630887E+36
2 √n
4571.7521805102
3 √n
275.45782910351
4 √n
67.614733457363
5 √n
29.109387826792
1 , 2 , 61 , 67 , 122 , 134 , 2557 , 4087 , 5114 , 8174 , 155977 , 171319 , 311954 , 342638 , 10450459 , 20900918
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20900917
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20900918 can be divided by 16 positive divisors.
The sum of these divisors (counting 20900918) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001111101110110000110110
3
Ternary
1110022212200002
4
Quaternary
1033232300312
5
Quinary
20322312133
6
Senary
2023551302
8
Octal
117566066
10
Decimal
20900918
12
Duodecimal
6bbb532
16
Hexadecimal
13eec36
20
Vigesimal
6acc5i
36
Base36
cfz92
md5
5edb3fb106bae3718dfcaa79bca2dcee
sha1
8e3b8066396174cd46a6a9296a53b252ed062f3d
sha256
cc72cae53576fb7be6c8da3f416c5a60b5ee22804e183509127032762d697600
sha512
20e4eb59fd19c9db277b65ac550070693433d4b5ea8318016d6c6880e2fff7d24cef77e631c8062339994ef18846b0b5c5c053a00c08bf705c98a24d0414a458
ripemd-160
bd5ce30df5c97146bd3f74ef53ae233d6afd1772
Diameter
41801836
Circumference
131324340.88417
Area
1.372399640112E+15
Volume
3.8245883121614E+22
Surface area
5.489598560448E+15
Circumference
131324340.88417
Perimeter
83603672
Area
436848373242724
Diagonal
29558361.701648
Surface area
2621090239456344
Volume
9.1305320275796E+21
Space diagonal
36201451.900831
Perimeter
62702754
Area
1.8916089441505E+14
Altitude
18100725.950415
Surface area
1.8916089441505E+14
Volume
1.0760435187571E+21
Height
9852787.2338826