81723489 is an odd 8-digits composite number following 81723488
and preceding 81723490 . In scientific notation, it is written as 8.1723489 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 54455856 positive integers (up to 81723489) that are relatively prime to 81723489.
81723489 has 8 divisors, whose sum is 109017600
The reverse of 81723489 is 98432718
Previous prime number is 10687
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighty-one million seven hundred twenty-three thousand four hundred eighty-nine
Scientific notation
8.1723489 × 10^7
Engineering notation
8.1723489 × 10^6
Prime Factorization
3 × 10687 × 2549
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81723489
Product of the distinct prime numbers
The prime factorization of 81723489 is 3 × 10687 × 2549.
Since it has a total of 3 prime factors.
10 , 10 , 89 , 70 , 537 , 41 , 5106 , 9758 , 7621 , 33044 , 21841 , 783074 , 8928577 , 2277548 , 2201547 , 13482966 , 968104064 , 890940427 , 7449712602 , 1152108937
n×2
163446978
n×3
245170467
n×4
326893956
n×5
408617445
n÷2
40861744.5
n÷3
27241163
n÷3
20430872.25
n÷5
16344697.8
n2
6678728654333121
n3
5.4580900771638E+23
n4
4.460541643821E+31
n5
3.6453102596285E+39
2 √n
9040.1044794847
3 √n
433.95926656575
4 √n
95.07946402607
5 √n
38.235729447315
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
-81723488
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 81723489 can be divided by 8 positive divisors.
The sum of these divisors (counting 81723489) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111110000000001100001
3
Ternary
12200202222112220
4
Quaternary
10313300001201
5
Quinary
131410122424
6
Senary
12035341253
8
Octal
467600141
10
Decimal
81723489
12
Duodecimal
23451829
16
Hexadecimal
4df0061
20
Vigesimal
15af8e9
36
Base36
1cnm8x
md5
097689fd42416fab6c843fe5b76d505e
sha1
e0826f32a83e1ee0f4316bfaea3638d1a4e239e2
sha256
aae09e4985b61aff995fb317f5d51035bd7f46d124cb78d72c96d18bfa8c3391
sha512
3d3aff25b1e6ec0f7a29a046b0973f7763daa14434ed39b285a1a6fda757a84f35f8a0e6934ca81f5aeb28b7c197a50bb3a10226eafec9af97acf3678c13b322
ripemd-160
c85a9260c878735abf81bd24df6e3ee368818c98
Diameter
163446978
Circumference
513483825.33625
Area
2.0981844875773E+16
Volume
2.2862794252065E+24
Surface area
8.392737950309E+16
Circumference
513483825.33625
Perimeter
326893956
Area
6678728654333121
Diagonal
115574466.50825
Surface area
40072371925998726
Volume
5.4580900771638E+23
Space diagonal
141549235.1198
Perimeter
245170467
Area
2.8919743398178E+15
Altitude
70774617.559898
Surface area
2.8919743398178E+15
Volume
6.4324208431492E+22
Height
38524822.169416