81444493 is an odd 8-digits composite number following 81444492
and preceding 81444494 . In scientific notation, it is written as 8.1444493 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 75108144 positive integers (up to 81444493) that are relatively prime to 81444493.
81444493 has 8 divisors, whose sum is 87792768
The reverse of 81444493 is 39444418
Previous prime number is 1367
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
eighty-one million four hundred forty-four thousand four hundred ninety-three
Scientific notation
8.1444493 × 10^7
Engineering notation
8.1444493 × 10^6
Prime Factorization
13 × 1367 × 4583
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81444493
Product of the distinct prime numbers
The prime factorization of 81444493 is 13 × 1367 × 4583.
Since it has a total of 3 prime factors.
6 , 6 , 96 , 66 , 547 , 292 , 4925 , 1135 , 33405 , 91578 , 340416 , 867961 , 9271974 , 5348806 , 57190498 , 14483287 , 34564757 , 620360600 , 8388919090 , 3537844104
n×2
162888986
n×3
244333479
n×4
325777972
n×5
407222465
n÷2
40722246.5
n÷3
27148164.333333
n÷3
20361123.25
n÷5
16288898.6
n2
6633205440027049
n3
5.4023805402784E+23
n4
4.3999414409604E+31
n5
3.5835099988871E+39
2 √n
9024.6602706141
3 √n
433.46487203309
4 √n
94.998211933773
5 √n
38.209587115674
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
-81444492
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 81444493 can be divided by 8 positive divisors.
The sum of these divisors (counting 81444493) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110101011111010001101
3
Ternary
12200020210211201
4
Quaternary
10312223322031
5
Quinary
131322210433
6
Senary
12025345501
8
Octal
466537215
10
Decimal
81444493
12
Duodecimal
23338291
16
Hexadecimal
4dabe8d
20
Vigesimal
1590b4d
36
Base36
1chmz1
md5
1201c3e8c6e865d3a6b06d2e62dea3b9
sha1
0edb2389c59e30f78732d6c00818128ed8ebc9f8
sha256
6af6f220b0adfdbfaf9f8234006ddba729c7b863a53d387b5948395080cfbba1
sha512
2642eb1e5ea4004f2e293f4463d008e8bb25080e2709f43c7b8b1052b5cdedb3aa9602029f917c15b8ef0a4272b96936e6cde9cd6e3d1b7a0fee8b4d0b451cda
ripemd-160
28a3f1157973eb16e4cddafa686371f2c48002e4
Diameter
162888986
Circumference
511730841.76829
Area
2.0838829480141E+16
Volume
2.2629438689647E+24
Surface area
8.3355317920563E+16
Circumference
511730841.76829
Perimeter
325777972
Area
6633205440027049
Diagonal
115179906.5812
Surface area
39799232640162294
Volume
5.4023805402784E+23
Space diagonal
141065999.87269
Perimeter
244333479
Area
2.8722622097923E+15
Altitude
70532999.936344
Surface area
2.8722622097923E+15
Volume
6.3667665243019E+22
Height
38393302.193734