81330666 is an even 8-digits composite number following 81330665
and preceding 81330667 . In scientific notation, it is written as 8.1330666 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 27110220 positive integers (up to 81330666) that are relatively prime to 81330666.
81330666 has 8 divisors, whose sum is 162661344
The reverse of 81330666 is 66603318
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6
Name
eighty-one million three hundred thirty thousand six hundred sixty-six
Scientific notation
8.1330666 × 10^7
Engineering notation
8.1330666 × 10^6
Prime Factorization
2 × 3 × 13555111
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81330666
Product of the distinct prime numbers
The prime factorization of 81330666 is 2 × 3 × 13555111.
Since it has a total of 3 prime factors.
1 , 1 , 67 , 51 , 806 , 954 , 8764 , 8083 , 63350 , 75659 , 52141 , 838525 , 1141986 , 6071793 , 48356452 , 13749338 , 355032404 , 543823445 , 2445191847 , 283215406
n×2
162661332
n×3
243991998
n×4
325322664
n×5
406653330
n÷2
40665333
n÷3
27110222
n÷3
20332666.5
n÷5
16266133.2
n2
6614677232003556
n3
5.3797610465389E+23
n4
4.3753954883586E+31
n5
3.558538290816E+39
2 √n
9018.3516232181
3 √n
433.26284073572
4 √n
94.965002096657
5 √n
38.198900779545
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
-81330665
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 81330666 can be divided by 8 positive divisors.
The sum of these divisors (counting 81330666) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110010000000111101010
3
Ternary
12200001000200220
4
Quaternary
10312100013222
5
Quinary
131310040131
6
Senary
12023110510
8
Octal
466200752
10
Decimal
81330666
12
Duodecimal
232a2436
16
Hexadecimal
4d901ea
20
Vigesimal
15866d6
36
Base36
1cf756
md5
e53393d302391e4bad26ab22862f2758
sha1
cc2ade7cee780a49e1500fe41d2c5d41a16821bd
sha256
426969e91ee9192d7ed0af26f56bf157a6ed39bff2958730f12d91c59810ce35
sha512
66d17e9dd23d6d15ed0dfe2ee83eeb813755f12df1bc9ecfef31e116ec93bdf66733ad3e709e48aed1e000a0e2cd358bf17d53cf56bce775eb29ddc2554dd349
ripemd-160
682742b3b3e25edda972213e22111408c7445a08
Diameter
162661332
Circumference
511015645.63433
Area
2.078062139793E+16
Volume
2.2534690375833E+24
Surface area
8.312248559172E+16
Circumference
511015645.63433
Perimeter
325322664
Area
6614677232003556
Diagonal
115018930.89404
Surface area
39688063392021336
Volume
5.3797610465389E+23
Space diagonal
140868845.72541
Perimeter
243991998
Area
2.8642392603748E+15
Altitude
70434422.862707
Surface area
2.8642392603748E+15
Volume
6.3401091952848E+22
Height
38339643.631345