81444897 is an odd 8-digits composite number following 81444896
and preceding 81444898 . In scientific notation, it is written as 8.1444897 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 6 positive divisors.
There are 54296592 positive integers (up to 81444897) that are relatively prime to 81444897.
81444897 has 6 divisors, whose sum is 117642642
The reverse of 81444897 is 79844418
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
eighty-one million four hundred forty-four thousand eight hundred ninety-seven
Scientific notation
8.1444897 × 10^7
Engineering notation
8.1444897 × 10^6
Prime Factorization
3 × 3 × 9049433
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
27148299
Product of the distinct prime numbers
The prime factorization of 81444897 is 3 × 3 × 9049433.
Since it has a total of 3 prime factors.
3 , 6 , 7 , 6 , 268 , 689 , 3851 , 5370 , 8418 , 16212 , 287936 , 236835 , 7279216 , 4771881 , 5458178 , 97376243 , 69820897 , 186959636 , 848145552 , 4670407629
n×2
162889794
n×3
244334691
n×4
325779588
n×5
407224485
n÷2
40722448.5
n÷3
27148299
n÷3
20361224.25
n÷5
16288979.4
n2
6633271247340609
n3
5.4024609351272E+23
n4
4.4000287440796E+31
n5
3.583598878586E+39
2 √n
9024.6826537004
3 √n
433.46558875648
4 √n
94.998329741635
5 √n
38.209625022823
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81444896
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81444897 can be divided by 6 positive divisors.
The sum of these divisors (counting 81444897) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
100110110101100000000100001
3
Ternary
12200020211101200
4
Quaternary
10312230000201
5
Quinary
131322214042
6
Senary
12025351413
8
Octal
466540041
10
Decimal
81444897
12
Duodecimal
23338569
16
Hexadecimal
4dac021
20
Vigesimal
1590c4h
36
Base36
1chna9
md5
29d281b36f64880cc58b9cd85050c045
sha1
d75375bfbf1301dd9807e4c1b8a0439b40f6d0a3
sha256
4417840aa2cf36e7553a56b9832d9643754879fb469c41ed6d7c23aa7a18fe96
sha512
950639930d427790d9ba0c07738d9f048f3419b78505462acc3a2960f3ce3fbb8b81594bb15da954c1fc6a6246270b3eb703fa97d63825493d1f93cf20890aae
ripemd-160
cf39754d64fa1aa0b47f6d76b1ded97b272727f0
Diameter
162889794
Circumference
511733380.17515
Area
2.0839036219914E+16
Volume
2.2629775446802E+24
Surface area
8.3356144879655E+16
Circumference
511733380.17515
Perimeter
325779588
Area
6633271247340609
Diagonal
115180477.92348
Surface area
39799627484043654
Volume
5.4024609351272E+23
Space diagonal
141066699.62121
Perimeter
244334691
Area
2.8722907051949E+15
Altitude
70533349.810607
Surface area
2.8722907051949E+15
Volume
6.3668612705397E+22
Height
38393492.64116