81279384 is an even 8-digits composite number following 81279383
and preceding 81279385 . In scientific notation, it is written as 8.1279384 × 10^7.
The sum of its digits is 42. It has a total of 6 prime factors and 32 positive divisors.
There are 26432000 positive integers (up to 81279384) that are relatively prime to 81279384.
81279384 has 32 divisors, whose sum is 208157040
The reverse of 81279384 is 48397218
Previous prime number is 41
Is Prime? no Number parity even Number length 8 Sum of Digits 42 Digital Root 6
Name
eighty-one million two hundred seventy-nine thousand three hundred eighty-four
Scientific notation
8.1279384 × 10^7
Engineering notation
8.1279384 × 10^6
Prime Factorization
2 × 2 × 2 × 3 × 41 × 82601
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
6 Total number of prime factors
rad Radical
20319846 Product of the distinct prime numbers
The prime factorization of 81279384 is 2 × 2 × 2 × 3 × 41 × 82601.
Since it has a total of 6 prime factors.
7 , 10 , 34 , 9 , 314 , 308 , 4145 , 2380 , 96061 , 76704 , 954651 , 774448 , 3787322 , 3939848 , 96075808 , 70894878 , 758436247 , 595334687 , 1733880621 , 2140361660
n×2
162558768
n×3
243838152
n×4
325117536
n×5
406396920
n÷2
40639692
n÷3
27093128
n÷3
20319846
n÷5
16255876.8
n2
6606338263419456
n3
5.3695910454636E+23
n4
4.364370525072E+31
n5
3.5473334782561E+39
2 √n9015.5079723774
3 √n433.17175882854
4 √n94.950028817149
5 √n38.194082399515
1 , 2 , 3 , 4 , 6 , 8 , 12 , 24 , 41 , 82 , 123 , 164 , 246 , 328 , 492 , 984 , 82601 , 165202 , 247803 , 330404 , 495606 , 660808 , 991212 , 1982424 , 3386641 , 6773282 , 10159923 , 13546564 , 20319846 , 27093128 , 40639692 , 81279384
32 divisors
τ Total Divisors
32 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-81279383 Sum of the proper positive divisors of n
A Arithmetic Mean
0.03125 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
32 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81279384 can be divided by 32 positive divisors.
The sum of these divisors (counting 81279384) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100110110000011100110011000
3
Ternary
12122221102100120
4
Quaternary
10312003212120
5
Quinary
131301420014
6
Senary
12022033240
8
Octal
466034630
10
Decimal
81279384
12
Duodecimal
23278820
16
Hexadecimal
4d83998
20
Vigesimal
157ji94
36
Base36
1ce3ko
md5
59c1cef59fe56cd38a5cf79bd4ebe507
sha1
8716bf4940430261c54b9696ecb3b6f24856c708
sha256
e39728c92a0677c28ecffdefc162d5e3105c1c2e82ee6a3ae375bc55d722b264
sha512
daafffdfbfc2dda2d7dd7fd212c10e45b18f2831f2c8cbff796de3e629afdea5b38a845e8ff5e0a15bda0c7f11d0859b661c1da1d348d8363a8822d68d87a834
ripemd-160
d5f7a394dc8eb8f8f8fc38058c02301cb412937b
Diameter
162558768
Circumference
510693431.32541
Area
2.0754423755488E+16
Volume
2.2492090374947E+24
Surface area
8.3017695021951E+16
Circumference
510693431.32541
Perimeter
325117536
Area
6606338263419456
Diagonal
114946407.19413
Surface area
39638029580516736
Volume
5.3695910454636E+23
Space diagonal
140780022.6959
Perimeter
243838152
Area
2.8606283810572E+15
Altitude
70390011.34795
Surface area
2.8606283810572E+15
Volume
6.3281237340765E+22
Height
38315469.06471