81320265 is an odd 8-digits composite number following 81320264
and preceding 81320266 . In scientific notation, it is written as 8.1320265 × 10^7.
The sum of its digits is 27. It has a total of 5 prime factors and 28 positive divisors.
There are 36661248 positive integers (up to 81320265) that are relatively prime to 81320265.
81320265 has 28 divisors, whose sum is 124395012
The reverse of 81320265 is 56202318
Previous prime number is 2405
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
eighty-one million three hundred twenty thousand two hundred sixty-five
Scientific notation
8.1320265 × 10^7
Engineering notation
8.1320265 × 10^6
Prime Factorization
51 × 3 × 13 × 2405 × 17
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
81320265
Product of the distinct prime numbers
The prime factorization of 81320265 is 51 × 3 × 13 × 2405 × 17.
Since it has a total of 5 prime factors.
6 , 1 , 33 , 39 , 429 , 398 , 6938 , 393 , 13504 , 57079 , 336768 , 15973 , 1762410 , 8052408 , 70030266 , 47216492 , 200428041 , 264948508 , 8002926936 , 3754026149
n×2
162640530
n×3
243960795
n×4
325281060
n×5
406601325
n÷2
40660132.5
n÷3
27106755
n÷3
20330066.25
n÷5
16264053
n2
6612985499670225
n3
5.3776973327434E+23
n4
4.3731577218849E+31
n5
3.5562634483047E+39
2 √n
9017.7749472916
3 √n
433.24437062622
4 √n
94.961965793109
5 √n
38.197923713668
1 , 3 , 13 , 17 , 39 , 51 , 153 , 221 , 663 , 867 , 1989 , 2405 , 2601 , 7215 , 11271 , 31265 , 33813 , 40885 , 93795 , 122655 , 367965 , 531505 , 1594515 , 2085135 , 4783545 , 6255405 , 27106755 , 81320265
28 divisors
τ
Total Divisors
28
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81320264
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.035714285714286
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
28
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81320265 can be divided by 28 positive divisors.
The sum of these divisors (counting 81320265) is 1, the average is 0.035714285714286.
Base
System
Value
2
Binary
100110110001101100101001001
3
Ternary
12200000111102200
4
Quaternary
10312031211021
5
Quinary
131304222030
6
Senary
12022550413
8
Octal
466154511
10
Decimal
81320265
12
Duodecimal
23298409
16
Hexadecimal
4d8d949
20
Vigesimal
15850d5
36
Base36
1cez49
md5
ad982ab99daa3609173b4c2d04751fb9
sha1
203c4312d1f2442df2fa40bcbf491bd5974e05d1
sha256
aae3a85a44c9b1e8f5b09b1ee8601a8c8c085544e94514082db4c58fa47380b7
sha512
a45491fe497ec530f47f6d5c2a4556d210136629e6f8695565b146a307cb801c6fe405f09eb89529ee81bcb3d744f065d9769ec79575af3820906d22b319946d
ripemd-160
28fe7b8aff56b65fd644c98019597ddbdad0ecf4
Diameter
162640530
Circumference
510950294.22395
Area
2.077530666406E+16
Volume
2.2526045911701E+24
Surface area
8.3101226656239E+16
Circumference
510950294.22395
Perimeter
325281060
Area
6612985499670225
Diagonal
115004221.65877
Surface area
39677912998021350
Volume
5.3776973327434E+23
Space diagonal
140850830.66497
Perimeter
243960795
Area
2.8635067187863E+15
Altitude
70425415.332483
Surface area
2.8635067187863E+15
Volume
6.3376770852528E+22
Height
38334740.552925