81497968 is an even 8-digits composite number following 81497967
and preceding 81497969 . In scientific notation, it is written as 8.1497968 × 10^7.
The sum of its digits is 52. It has a total of 5 prime factors and 10 positive divisors.
There are 40748976 positive integers (up to 81497968) that are relatively prime to 81497968.
81497968 has 10 divisors, whose sum is 157902344
The reverse of 81497968 is 86979418
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 52
Digital Root 7
Name
eighty-one million four hundred ninety-seven thousand nine hundred sixty-eight
Scientific notation
8.1497968 × 10^7
Engineering notation
8.1497968 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 5093623
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
10187246
Product of the distinct prime numbers
The prime factorization of 81497968 is 2 × 2 × 2 × 2 × 5093623.
Since it has a total of 5 prime factors.
1 , 7 , 58 , 56 , 431 , 144 , 3453 , 1639 , 95878 , 68116 , 745011 , 6136 , 7950133 , 6292040 , 38518153 , 34714603 , 697956355 , 333414688 , 6008475189 , 7316733481
n×2
162995936
n×3
244493904
n×4
325991872
n×5
407489840
n÷2
40748984
n÷3
27165989.333333
n÷3
20374492
n÷5
16299593.6
n2
6641918788129024
n3
5.4130288485354E+23
n4
4.4115085188101E+31
n5
3.5952898009772E+39
2 √n
9027.6224998612
3 √n
433.55971970966
4 √n
95.013801628296
5 √n
38.214603344962
10 divisors
τ
Total Divisors
10
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81497967
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.1
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
10
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81497968 can be divided by 10 positive divisors.
The sum of these divisors (counting 81497968) is 1, the average is 0.1.
Base
System
Value
2
Binary
100110110111000111101110000
3
Ternary
12200100112012021
4
Quaternary
10312320331300
5
Quinary
131330413333
6
Senary
12030441224
8
Octal
466707560
10
Decimal
81497968
12
Duodecimal
23363214
16
Hexadecimal
4db8f70
20
Vigesimal
15974i8
36
Base36
1cis8g
md5
1446caa7538fc9edccb5ab9160bb2956
sha1
3611c11dd6c9e06793ecfe2637ec8c05f6adf49d
sha256
4fe38c916adacdca471f2028b959db852a4eefda83d1539f1436181926dd5b94
sha512
fe570848d30edd57dcb7db2162fdeedbc2d7cf75ed770b3b7c6c32c1a0b29b637f948e606d9e67e30082ef57948fec056b03a91d260f16c00936477cf8650c8a
ripemd-160
9274804ab333cf8c0abf9cfaecee9668c679b762
Diameter
162995936
Circumference
512066835.10259
Area
2.0866203270526E+16
Volume
2.2674042218971E+24
Surface area
8.3464813082105E+16
Circumference
512066835.10259
Perimeter
325991872
Area
6641918788129024
Diagonal
115255531.65145
Surface area
39851512728774144
Volume
5.4130288485354E+23
Space diagonal
141158621.28962
Perimeter
244493904
Area
2.8760352001964E+15
Altitude
70579310.644811
Surface area
2.8760352001964E+15
Volume
6.3793156759296E+22
Height
38418510.550483