81103666 is an even 8-digits composite number following 81103665
and preceding 81103667 . In scientific notation, it is written as 8.1103666 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 32929200 positive integers (up to 81103666) that are relatively prime to 81103666.
81103666 has 8 divisors, whose sum is 122570604
The reverse of 81103666 is 66630118
Previous prime number is 133
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
eighty-one million one hundred three thousand six hundred sixty-six
Scientific notation
8.1103666 × 10^7
Engineering notation
8.1103666 × 10^6
Prime Factorization
2 × 133 × 304901
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81103666
Product of the distinct prime numbers
The prime factorization of 81103666 is 2 × 133 × 304901.
Since it has a total of 3 prime factors.
7 , 7 , 3 , 80 , 192 , 165 , 2749 , 5916 , 63408 , 13522 , 249259 , 98058 , 4633536 , 8893384 , 53945709 , 54240566 , 623111878 , 412916106 , 1628015238 , 7785407898
n×2
162207332
n×3
243310998
n×4
324414664
n×5
405518330
n÷2
40551833
n÷3
27034555.333333
n÷3
20275916.5
n÷5
16220733.2
n2
6577804638639556
n3
5.3348407042547E+23
n4
4.3267513864108E+31
n5
3.509153993085E+39
2 √n
9005.7573806982
3 √n
432.85937542061
4 √n
94.898669014366
5 √n
38.17755373327
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
-81103665
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 81103666 can be divided by 8 positive divisors.
The sum of these divisors (counting 81103666) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110101011000101100110010
3
Ternary
12122121111022111
4
Quaternary
10311120230302
5
Quinary
131230304131
6
Senary
12014155534
8
Octal
465305462
10
Decimal
81103666
12
Duodecimal
231b2baa
16
Hexadecimal
4d58b32
20
Vigesimal
156hj36
36
Base36
1cabzm
md5
8fbfd76f72c0e843efd26db4f15242c5
sha1
29337d6d0b3f8d99b9450a3b236d14cd490e3310
sha256
9f6cc669ee0df1d0db1b1152de1e3f717ca6ab8ffc4448e1bb44a6e6000df299
sha512
9ac6fdced97dd943c9b9a7e07cd89567e8f0f9579cf9278670252189527e6b38f1b341ce2564a7ad033d07daddc247772b5684cfd2befbe78d43472597ed7b54
ripemd-160
d1f08d1609ed07c93f27fd3189b360e5d797a01e
Diameter
162207332
Circumference
509589362.5696
Area
2.0664782729499E+16
Volume
2.2346528486078E+24
Surface area
8.2659130917996E+16
Circumference
509589362.5696
Perimeter
324414664
Area
6577804638639556
Diagonal
114697904.41538
Surface area
39466827831837336
Volume
5.3348407042547E+23
Space diagonal
140475670.1921
Perimeter
243310998
Area
2.8482729590965E+15
Altitude
70237835.096048
Surface area
2.8482729590965E+15
Volume
6.2871700642142E+22
Height
38232634.805126