81337897 is an odd 8-digits composite number following 81337896
and preceding 81337898 . In scientific notation, it is written as 8.1337897 × 10^7.
The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors.
There are 79446276 positive integers (up to 81337897) that are relatively prime to 81337897.
81337897 has 4 divisors, whose sum is 83229520
The reverse of 81337897 is 79873318
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
eighty-one million three hundred thirty-seven thousand eight hundred ninety-seven
Scientific notation
8.1337897 × 10^7
Engineering notation
8.1337897 × 10^6
Prime Factorization
43 × 1891579
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81337897
Product of the distinct prime numbers
The prime factorization of 81337897 is 43 × 1891579.
Since it has a total of 2 prime factors.
5 , 6 , 45 , 53 , 308 , 540 , 949 , 9867 , 77679 , 88224 , 55867 , 525151 , 4611458 , 7575301 , 47718989 , 18524294 , 689587385 , 688399234 , 789474747 , 3283724543
n×2
162675794
n×3
244013691
n×4
325351588
n×5
406689485
n÷2
40668948.5
n÷3
27112632.333333
n÷3
20334474.25
n÷5
16267579.4
n2
6615853488382609
n3
5.3811960960516E+23
n4
4.3769517379744E+31
n5
3.5601204963734E+39
2 √n
9018.7525190572
3 √n
433.27568062713
4 √n
94.967112828901
5 √n
38.199579997956
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81337896
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81337897 can be divided by 4 positive divisors.
The sum of these divisors (counting 81337897) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110010001111000101001
3
Ternary
12200001101121201
4
Quaternary
10312101320221
5
Quinary
131310303042
6
Senary
12023204201
8
Octal
466217051
10
Decimal
81337897
12
Duodecimal
232a6661
16
Hexadecimal
4d91e29
20
Vigesimal
15874eh
36
Base36
1cfcq1
md5
39bee7da8df884bfe08ea8558f9e74a3
sha1
bb256c9ab04bc72587f150535877623e8e3082d4
sha256
700c352862a901017ab720d831fe26d7200130d6ed2ec6b6f8701ac154e14c14
sha512
f2d3fa5d9fad623cdaef02203b7013d033a6d901bb79a658606dc724bfd5cf40978b39dd7deb19fa4952cd16599ba1b25f12e9259df9ba6594108af5f7fa125c
ripemd-160
248cf718ea8a090207472775d5fadc36a652f317
Diameter
162675794
Circumference
511061079.34729
Area
2.0784316716329E+16
Volume
2.2540701497176E+24
Surface area
8.3137266865317E+16
Circumference
511061079.34729
Perimeter
325351588
Area
6615853488382609
Diagonal
115029157.07231
Surface area
39695120930295654
Volume
5.3811960960516E+23
Space diagonal
140881370.1848
Perimeter
244013691
Area
2.8647485943276E+15
Altitude
70440685.092402
Surface area
2.8647485943276E+15
Volume
6.3418004173544E+22
Height
38343052.357435