81127894 is an even 8-digits composite number following 81127893
and preceding 81127895 . In scientific notation, it is written as 8.1127894 × 10^7.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 40531920 positive integers (up to 81127894) that are relatively prime to 81127894.
81127894 has 8 divisors, whose sum is 121787928
The reverse of 81127894 is 49872118
Previous prime number is 1321
Is Prime? no
Number parity even
Number length 8
Sum of Digits 40
Digital Root 4
Name
eighty-one million one hundred twenty-seven thousand eight hundred ninety-four
Scientific notation
8.1127894 × 10^7
Engineering notation
8.1127894 × 10^6
Prime Factorization
2 × 1321 × 30707
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81127894
Product of the distinct prime numbers
The prime factorization of 81127894 is 2 × 1321 × 30707.
Since it has a total of 3 prime factors.
3 , 8 , 19 , 86 , 301 , 667 , 344 , 9411 , 15753 , 82343 , 253158 , 630039 , 227522 , 9374192 , 81997095 , 20662334 , 788123291 , 173809095 , 5043919313 , 9347273898
n×2
162255788
n×3
243383682
n×4
324511576
n×5
405639470
n÷2
40563947
n÷3
27042631.333333
n÷3
20281973.5
n÷5
16225578.8
n2
6581735184875236
n3
5.3396231441463E+23
n4
4.3319238043825E+31
n5
3.5143985521802E+39
2 √n
9007.1024197574
3 √n
432.90247364847
4 √n
94.905755461707
5 √n
38.17983440765
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
-81127893
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 81127894 can be divided by 8 positive divisors.
The sum of these divisors (counting 81127894) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110101011110100111010110
3
Ternary
12122122201112211
4
Quaternary
10311132213112
5
Quinary
131232043034
6
Senary
12014504034
8
Octal
465364726
10
Decimal
81127894
12
Duodecimal
2320501a
16
Hexadecimal
4d5e9d6
20
Vigesimal
1570jee
36
Base36
1cauom
md5
7c4e5718438c2d3cedc213b3f013722e
sha1
818cf4df25087057c8efbcdeebecba57b601c401
sha256
4525f54ec87bfa644a93cb88ba63d6c450fc8219050ff3e536ebafec74f6c8e4
sha512
7837b6f0d98a607e885950968019e1677756e5ef373bc1e1797e0a91679ef47c878cd7815c290129e795998a5b4db4035db9ba40635a02d24c7460225e61158d
ripemd-160
a35b0a8ae0ae0bcf7365a9f77c9826257e3ac9cf
Diameter
162255788
Circumference
509741591.58322
Area
2.0677130904678E+16
Volume
2.2366561123451E+24
Surface area
8.270852361871E+16
Circumference
509741591.58322
Perimeter
324511576
Area
6581735184875236
Diagonal
114732167.98157
Surface area
39490411109251416
Volume
5.3396231441463E+23
Space diagonal
140517634.31906
Perimeter
243383682
Area
2.8499749355419E+15
Altitude
70258817.159531
Surface area
2.8499749355419E+15
Volume
6.2928062236775E+22
Height
38244055.993856