81295115 is an odd 8-digits composite number following 81295114
and preceding 81295116 . In scientific notation, it is written as 8.1295115 × 10^7.
The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors.
There are 58686720 positive integers (up to 81295115) that are relatively prime to 81295115.
81295115 has 16 divisors, whose sum is 107209440
The reverse of 81295115 is 51159218
Previous prime number is 137
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
eighty-one million two hundred ninety-five thousand one hundred fifteen
Scientific notation
8.1295115 × 10^7
Engineering notation
8.1295115 × 10^6
Prime Factorization
11 × 5 × 137 × 10789
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81295115
Product of the distinct prime numbers
The prime factorization of 81295115 is 11 × 5 × 137 × 10789.
Since it has a total of 4 prime factors.
10 , 9 , 88 , 46 , 598 , 434 , 9709 , 8004 , 10241 , 16526 , 991257 , 654645 , 2707318 , 7405443 , 86946009 , 9519947 , 358561344 , 753327710 , 7260124525 , 2281610639
n×2
162590230
n×3
243885345
n×4
325180460
n×5
406475575
n÷2
40647557.5
n÷3
27098371.666667
n÷3
20323778.75
n÷5
16259023
n2
6608895722863225
n3
5.3727093781317E+23
n4
4.367750267568E+31
n5
3.5507676029322E+39
2 √n
9016.380371302
3 √n
433.19970271392
4 √n
94.954622695801
5 √n
38.195560719284
1 , 5 , 11 , 55 , 137 , 685 , 1507 , 7535 , 10789 , 53945 , 118679 , 593395 , 1478093 , 7390465 , 16259023 , 81295115
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
-81295114
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 81295115 can be divided by 16 positive divisors.
The sum of these divisors (counting 81295115) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110000111011100001011
3
Ternary
12122222012221012
4
Quaternary
10312013130023
5
Quinary
131302420430
6
Senary
12022234135
8
Octal
466073413
10
Decimal
81295115
12
Duodecimal
2328594b
16
Hexadecimal
4d8770b
20
Vigesimal
1581hff
36
Base36
1cefpn
md5
9f8cd7abe2b03e548a88e191231d81a9
sha1
7b2d5d4737193ae6b6a81bd5c4ae471630bd4c60
sha256
2620cbbfe47f84c84a6fd3f76c33e0d8b797a98d35430d89945eff6b5cf8a426
sha512
f352bed881f6d02a449665346a260b870f80c0927c4e5689d5c5bb33f040d34204de544fbac487bb011bc131dbe704d8227743c9e291839fc6facf6f55d23843
ripemd-160
64ad39eb449cbc4bc2f78c8a66a42d0158e9c537
Diameter
162590230
Circumference
510792272.11347
Area
2.0762458251288E+16
Volume
2.2505152416282E+24
Surface area
8.3049833005152E+16
Circumference
510792272.11347
Perimeter
325180460
Area
6608895722863225
Diagonal
114968654.18768
Surface area
39653374337179350
Volume
5.3727093781317E+23
Space diagonal
140807269.58715
Perimeter
243885345
Area
2.8617357934809E+15
Altitude
70403634.793577
Surface area
2.8617357934809E+15
Volume
6.3317987243692E+22
Height
38322884.729227