81272271 is an odd 8-digits composite number following 81272270
and preceding 81272272 . In scientific notation, it is written as 8.1272271 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 51825752 positive integers (up to 81272271) that are relatively prime to 81272271.
81272271 has 8 divisors, whose sum is 113074560
The reverse of 81272271 is 17227218
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
eighty-one million two hundred seventy-two thousand two hundred seventy-one
Scientific notation
8.1272271 × 10^7
Engineering notation
8.1272271 × 10^6
Prime Factorization
3 × 23 × 1177859
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81272271
Product of the distinct prime numbers
The prime factorization of 81272271 is 3 × 23 × 1177859.
Since it has a total of 3 prime factors.
8 , 1 , 92 , 26 , 118 , 124 , 6971 , 7841 , 11084 , 48674 , 653316 , 396143 , 4233494 , 4331429 , 13097675 , 65529124 , 107751178 , 834235578 , 9728179533 , 4754491596
n×2
162544542
n×3
243816813
n×4
325089084
n×5
406361355
n÷2
40636135.5
n÷3
27090757
n÷3
20318067.75
n÷5
16254454.2
n2
6605182033497441
n3
5.3681814423074E+23
n4
4.3628429695637E+31
n5
3.5457815615283E+39
2 √n
9015.1134768232
3 √n
433.15912241139
4 √n
94.947951409302
5 √n
38.193413880623
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
-81272270
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 81272271 can be divided by 8 positive divisors.
The sum of these divisors (counting 81272271) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110000001110111001111
3
Ternary
12122221001121010
4
Quaternary
10312001313033
5
Quinary
131301203041
6
Senary
12021540303
8
Octal
466016717
10
Decimal
81272271
12
Duodecimal
23274693
16
Hexadecimal
4d81dcf
20
Vigesimal
157j0db
36
Base36
1cdy33
md5
72a8a82572c5836b6f13991bb37f30f3
sha1
2e32abfb057d93d3cccbdcade26bca7de8396cc6
sha256
750cf258af114553a21a67d4be6167c63630ffda324ec31097c6a6054980a70a
sha512
4996e605dfc285e9de232619018e61469f4097f378bf0226fcb3cd890a33021063adde0ec8d7e4ba8229e8bc042837f151b232e80ca0efae0334cece924c54c1
ripemd-160
759040323a216431e4ec83a8fef7641f5212c9cd
Diameter
162544542
Circumference
510648739.02832
Area
2.0750791352059E+16
Volume
2.2486185843053E+24
Surface area
8.3003165408235E+16
Circumference
510648739.02832
Perimeter
325089084
Area
6605182033497441
Diagonal
114936347.89306
Surface area
39631092200984646
Volume
5.3681814423074E+23
Space diagonal
140767702.61851
Perimeter
243816813
Area
2.8601277188147E+15
Altitude
70383851.309253
Surface area
2.8601277188147E+15
Volume
6.3264625008255E+22
Height
38312115.964354