81704889 is an odd 8-digits composite number following 81704888
and preceding 81704890 . In scientific notation, it is written as 8.1704889 × 10^7.
The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors.
There are 46688400 positive integers (up to 81704889) that are relatively prime to 81704889.
81704889 has 16 divisors, whose sum is 138336640
The reverse of 81704889 is 98840718
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
eighty-one million seven hundred four thousand eight hundred eighty-nine
Scientific notation
8.1704889 × 10^7
Engineering notation
8.1704889 × 10^6
Prime Factorization
9 × 7 × 3 × 432301
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81704889
Product of the distinct prime numbers
The prime factorization of 81704889 is 9 × 7 × 3 × 432301.
Since it has a total of 4 prime factors.
10 , 9 , 47 , 27 , 21 , 210 , 5013 , 8652 , 22695 , 93490 , 80788 , 82234 , 1465674 , 2539432 , 30086527 , 25396982 , 155497759 , 941854800 , 6107849964 , 7838938887
n×2
163409778
n×3
245114667
n×4
326819556
n×5
408524445
n÷2
40852444.5
n÷3
27234963
n÷3
20426222.25
n÷5
16340977.8
n2
6675688886502321
n3
5.4543641947021E+23
n4
4.4564822109371E+31
n5
3.6411638437509E+39
2 √n
9039.0756717709
3 √n
433.92634149571
4 √n
95.07405362017
5 √n
38.233988823339
1 , 3 , 7 , 9 , 21 , 27 , 63 , 189 , 432301 , 1296903 , 3026107 , 3890709 , 9078321 , 11672127 , 27234963 , 81704889
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
-81704888
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 81704889 can be divided by 16 positive divisors.
The sum of these divisors (counting 81704889) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111101011011110111001
3
Ternary
12200202001001000
4
Quaternary
10313223132321
5
Quinary
131404024024
6
Senary
12035115213
8
Octal
467533671
10
Decimal
81704889
12
Duodecimal
23442b09
16
Hexadecimal
4deb7b9
20
Vigesimal
15ad249
36
Base36
1cn7w9
md5
ebff6ddfd4a9a9bc0ccd6ace024ee408
sha1
3c08fada85cd590779b87a9db1c88c14613f8c58
sha256
b2770128a81383d712b18b8a3e94286ec5bac49eb4f341610c8b15dff6592b68
sha512
52cc4bec754702c2b0725f373eeece7c0634fb06bb3df3a7021b65b722ab7938d51ce10bfd21a43e8a325cc10e730793572f24ba7a45ac6af1da56e394391adb
ripemd-160
e20c3c01493804eb8cd7cd7f4047781d2884b35a
Diameter
163409778
Circumference
513366958.08954
Area
2.0972295163487E+16
Volume
2.2847187312106E+24
Surface area
8.3889180653947E+16
Circumference
513366958.08954
Perimeter
326819556
Area
6675688886502321
Diagonal
115548162.13599
Surface area
40054133319013926
Volume
5.4543641947021E+23
Space diagonal
141517018.97478
Perimeter
245114667
Area
2.8906580817362E+15
Altitude
70758509.487388
Surface area
2.8906580817362E+15
Volume
6.4280298485582E+22
Height
38516054.045329