81492893 is an odd 8-digits composite number following 81492892
and preceding 81492894 . In scientific notation, it is written as 8.1492893 × 10^7.
The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors.
There are 77781600 positive integers (up to 81492893) that are relatively prime to 81492893.
81492893 has 8 divisors, whose sum is 85276416
The reverse of 81492893 is 39829418
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8
Name
eighty-one million four hundred ninety-two thousand eight hundred ninety-three
Scientific notation
8.1492893 × 10^7
Engineering notation
8.1492893 × 10^6
Prime Factorization
73 × 31 × 36011
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81492893
Product of the distinct prime numbers
The prime factorization of 81492893 is 73 × 31 × 36011.
Since it has a total of 3 prime factors.
2 , 8 , 73 , 87 , 116 , 637 , 6804 , 1900 , 98137 , 57495 , 277353 , 97884 , 1832091 , 1559203 , 17551055 , 24107217 , 353343004 , 608695559 , 1892471806 , 1141245861
n×2
162985786
n×3
244478679
n×4
325971572
n×5
407464465
n÷2
40746446.5
n÷3
27164297.666667
n÷3
20373223.25
n÷5
16298578.6
n2
6641091609509449
n3
5.4120176793695E+23
n4
4.4104097765897E+31
n5
3.5941705200978E+39
2 √n
9027.3414137275
3 √n
433.55072005276
4 √n
95.012322430975
5 √n
38.214127397039
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
-81492892
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 81492893 can be divided by 8 positive divisors.
The sum of these divisors (counting 81492893) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110110111101110011101
3
Ternary
12200100021020022
4
Quaternary
10312313232131
5
Quinary
131330233033
6
Senary
12030401525
8
Octal
466675635
10
Decimal
81492893
12
Duodecimal
233602a5
16
Hexadecimal
4db7b9d
20
Vigesimal
1596c4d
36
Base36
1ciobh
md5
ce5a089d9fc19daf55f1b29e7a756bac
sha1
73d194099f5107962f0b155d0bf582e8c9291569
sha256
13c0b1b6b06491480c2db5780d950f64a42db13dfc4ee1601930ec4a3fc96533
sha512
9460856692d98cbabfc2459fb6072e0e23169a10339376a2c5c5ea48ef73abea5ea9fbbaffabc664e06188f0c7eaac8ebf3ca7023bbdad50df7202d491c76805
ripemd-160
d6819204df8d31c0f931719c01537debd13a04b4
Diameter
162985786
Circumference
512034947.93716
Area
2.0863604612252E+16
Volume
2.2669806643474E+24
Surface area
8.3454418449007E+16
Circumference
512034947.93716
Perimeter
325971572
Area
6641091609509449
Diagonal
115248354.51762
Surface area
39846549657056694
Volume
5.4120176793695E+23
Space diagonal
141149831.13177
Perimeter
244478679
Area
2.8756770213474E+15
Altitude
70574915.565887
Surface area
2.8756770213474E+15
Volume
6.3781240016394E+22
Height
38416118.17254