81275982 is an even 8-digits composite number following 81275981
and preceding 81275983 . In scientific notation, it is written as 8.1275982 × 10^7.
The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors.
There are 27071352 positive integers (up to 81275982) that are relatively prime to 81275982.
81275982 has 16 divisors, whose sum is 162675840
The reverse of 81275982 is 28957218
Previous prime number is 1543
Is Prime? no
Number parity even
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighty-one million two hundred seventy-five thousand nine hundred eighty-two
Scientific notation
8.1275982 × 10^7
Engineering notation
8.1275982 × 10^6
Prime Factorization
2 × 3 × 1543 × 8779
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81275982
Product of the distinct prime numbers
The prime factorization of 81275982 is 2 × 3 × 1543 × 8779.
Since it has a total of 4 prime factors.
6 , 5 , 86 , 95 , 644 , 384 , 7736 , 9611 , 58238 , 99864 , 757971 , 758644 , 3553855 , 1634948 , 71141265 , 11058399 , 199670554 , 625779493 , 4388588244 , 2856782802
n×2
162551964
n×3
243827946
n×4
325103928
n×5
406379910
n÷2
40637991
n÷3
27091994
n÷3
20318995.5
n÷5
16255196.4
n2
6605785250064324
n3
5.3689168308009E+23
n4
4.3636398769967E+31
n5
3.5465911609727E+39
2 √n
9015.3192955103
3 √n
433.16571518495
4 √n
94.949035253183
5 √n
38.193762666669
1 , 2 , 3 , 6 , 1543 , 3086 , 4629 , 8779 , 9258 , 17558 , 26337 , 52674 , 13545997 , 27091994 , 40637991 , 81275982
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
-81275981
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 81275982 can be divided by 16 positive divisors.
The sum of these divisors (counting 81275982) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110000010110001001110
3
Ternary
12122221020200120
4
Quaternary
10312002301032
5
Quinary
131301312412
6
Senary
12022005410
8
Octal
466026116
10
Decimal
81275982
12
Duodecimal
23276866
16
Hexadecimal
4d82c4e
20
Vigesimal
157j9j2
36
Base36
1ce0y6
md5
5d7e52c59b76d0b6ea7104215d59b1bc
sha1
fb6695ab4fe573c91d9a44d3ac854cbd004cf530
sha256
437091383c90d7355168f7101682ed58d5060cc103e6784eb7ad601526c0d1f9
sha512
302513703205fa4c9ef10e101af9ce345aa3a0b5498d688fe7d98522efc8842c1bf9596a8213a42e2022e6dfc88124fbda5e6135b2312d380cc660810ecf7aed
ripemd-160
e467279926a5d1df05647f3bc5d3bad0b37709dc
Diameter
162551964
Circumference
510672055.92899
Area
2.0752686412794E+16
Volume
2.2489266231172E+24
Surface area
8.3010745651176E+16
Circumference
510672055.92899
Perimeter
325103928
Area
6605785250064324
Diagonal
114941596.03959
Surface area
39634711500385944
Volume
5.3689168308009E+23
Space diagonal
140774130.25905
Perimeter
243827946
Area
2.8603889192501E+15
Altitude
70387065.129527
Surface area
2.8603889192501E+15
Volume
6.3273291644765E+22
Height
38313865.346531