81108312 is an even 8-digits composite number following 81108311
and preceding 81108313 . In scientific notation, it is written as 8.1108312 × 10^7.
The sum of its digits is 24. It has a total of 5 prime factors and 16 positive divisors.
There are 27036096 positive integers (up to 81108312) that are relatively prime to 81108312.
81108312 has 16 divisors, whose sum is 202770840
The reverse of 81108312 is 21380118
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 24
Digital Root 6
Name
eighty-one million one hundred eight thousand three hundred twelve
Scientific notation
8.1108312 × 10^7
Engineering notation
8.1108312 × 10^6
Prime Factorization
2 × 2 × 2 × 3 × 3379513
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
20277078
Product of the distinct prime numbers
The prime factorization of 81108312 is 2 × 2 × 2 × 3 × 3379513.
Since it has a total of 5 prime factors.
1 , 10 , 38 , 81 , 329 , 702 , 9 , 2374 , 87139 , 71974 , 55272 , 941514 , 8557982 , 7967264 , 87728185 , 19902702 , 720988633 , 939421474 , 9965179060 , 3297804401
n×2
162216624
n×3
243324936
n×4
324433248
n×5
405541560
n÷2
40554156
n÷3
27036104
n÷3
20277078
n÷5
16221662.4
n2
6578558275489344
n3
5.3357575711857E+23
n4
4.3277428984009E+31
n5
3.5101592125929E+39
2 √n
9006.0153231049
3 √n
432.86764067074
4 √n
94.900028045859
5 √n
38.177991121268
1 , 2 , 3 , 4 , 6 , 8 , 12 , 24 , 3379513 , 6759026 , 10138539 , 13518052 , 20277078 , 27036104 , 40554156 , 81108312
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
-81108311
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 81108312 can be divided by 16 positive divisors.
The sum of these divisors (counting 81108312) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110101011001110101011000
3
Ternary
12122121201200120
4
Quaternary
10311121311120
5
Quinary
131230431222
6
Senary
12014233240
8
Octal
465316530
10
Decimal
81108312
12
Duodecimal
231b5820
16
Hexadecimal
4d59d58
20
Vigesimal
156iafc
36
Base36
1cafko
md5
66e1988feae2c6f53593cbd6fa5f73da
sha1
a424f59374bb97de15b7933d98d77108491a6490
sha256
3d68d489d3c094398e048ba62ad057df635fe26b9a1049f96772e51073e3a5ac
sha512
8210953aca5274164f055547f2943b617b3ea9a902fba9b2e8f075b9ba3b2df32440a77c27714ec8e02b4bdf3604266523e9fcd443a1fb6f3265d6fe67f133e1
ripemd-160
5705a457191e05df7dfab8a6f5484948ebac0775
Diameter
162216624
Circumference
509618554.24854
Area
2.066715034949E+16
Volume
2.2350369049298E+24
Surface area
8.2668601397959E+16
Circumference
509618554.24854
Perimeter
324433248
Area
6578558275489344
Diagonal
114704474.85159
Surface area
39471349652936064
Volume
5.3357575711857E+23
Space diagonal
140483717.30015
Perimeter
243324936
Area
2.8485992934251E+15
Altitude
70241858.650074
Surface area
2.8485992934251E+15
Volume
6.2882506022548E+22
Height
38234824.950529