20981318 is an even 8-digits composite number following 20981317
and preceding 20981319 . In scientific notation, it is written as 2.0981318 × 10^7.
The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors.
There are 10334016 positive integers (up to 20981318) that are relatively prime to 20981318.
20981318 has 8 divisors, whose sum is 31941912
The reverse of 20981318 is 81318902
Previous prime number is 67
Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million nine hundred eighty-one thousand three hundred eighteen
Scientific notation
2.0981318 × 10^7
Engineering notation
2.0981318 × 10^6
Prime Factorization
2 × 67 × 156577
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20981318
Product of the distinct prime numbers
The prime factorization of 20981318 is 2 × 67 × 156577.
Since it has a total of 3 prime factors.
7 , 9 , 12 , 69 , 48 , 121 , 1736 , 9925 , 61637 , 86632 , 315970 , 689712 , 4557554 , 449255 , 83997258 , 43785679 , 678539914 , 119364976 , 3124564389 , 229732630
n×2
41962636
n×3
62943954
n×4
83925272
n×5
104906590
n÷2
10490659
n÷3
6993772.6666667
n÷3
5245329.5
n÷5
4196263.6
n2
440215705017124
n3
9.2363056955585E+21
n4
1.9378986694372E+29
n5
4.065966823524E+36
2 √n
4580.5368680975
3 √n
275.81058031536
4 √n
67.679663622815
5 √n
29.131748585608
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
-20981317
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 20981318 can be divided by 8 positive divisors.
The sum of these divisors (counting 20981318) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000010011001000110
3
Ternary
1110110221221212
4
Quaternary
1100002121012
5
Quinary
20332400233
6
Senary
2025411422
8
Octal
120023106
10
Decimal
20981318
12
Duodecimal
7039b72
16
Hexadecimal
1402646
20
Vigesimal
6b2d5i
36
Base36
chpae
md5
93f29c6e86cbb45a478fd672d78add31
sha1
d0bf41483323e93e63b84576b489cdf9b663cfbc
sha256
d9eb444168ffc7e6c19a952aeb3e7bcb981f9e86ca349eb1dd50f4ff97e4c367
sha512
04456529e829cebb9fd667840443a21b1502d228e0b6c9076638dc36498d54fcb194cd4ec46d376328e93f2791df33576c5b490f572cb91c2ae7c2ea72cab2f2
ripemd-160
afc71bc1375f9a9df98f6a9b959395eba56126d7
Diameter
41962636
Circumference
131829508.98286
Area
1.3829784248766E+15
Volume
3.8688946825968E+22
Surface area
5.5319136995066E+15
Circumference
131829508.98286
Perimeter
83925272
Area
440215705017124
Diagonal
29672064.472063
Surface area
2641294230102744
Volume
9.2363056955585E+21
Space diagonal
36340708.785759
Perimeter
62943954
Area
1.9061899184485E+14
Altitude
18170354.39288
Surface area
1.9061899184485E+14
Volume
1.0885090650736E+21
Height
9890688.1573542