81972783 is an odd 8-digits composite number following 81972782
and preceding 81972784 . In scientific notation, it is written as 8.1972783 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 51771960 positive integers (up to 81972783) that are relatively prime to 81972783.
81972783 has 8 divisors, whose sum is 89483520
The reverse of 81972783 is 38727918
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
eighty-one million nine hundred seventy-two thousand seven hundred eighty-three
Scientific notation
8.1972783 × 10^7
Engineering notation
8.1972783 × 10^6
Prime Factorization
27 × 19 × 159791
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81972783
Product of the distinct prime numbers
The prime factorization of 81972783 is 27 × 19 × 159791.
Since it has a total of 3 prime factors.
8 , 5 , 85 , 18 , 100 , 757 , 7456 , 9474 , 68593 , 52688 , 601781 , 925970 , 1551219 , 4675866 , 99540073 , 7877199 , 457235405 , 283800520 , 3924090249 , 5035662267
n×2
163945566
n×3
245918349
n×4
327891132
n×5
409863915
n÷2
40986391.5
n÷3
27324261
n÷3
20493195.75
n÷5
16394556.6
n2
6719537152765089
n3
5.5081916088405E+23
n4
4.515217954739E+31
n5
3.7012498160153E+39
2 √n
9053.8822059932
3 √n
434.40007669178
4 √n
95.151890186129
5 √n
38.25902832647
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
-81972782
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 81972783 can be divided by 8 positive divisors.
The sum of these divisors (counting 81972783) is 1, the average is 0.125.
Base
System
Value
2
Binary
100111000101100111000101111
3
Ternary
12201020122112000
4
Quaternary
10320230320233
5
Quinary
131441112113
6
Senary
12044543343
8
Octal
470547057
10
Decimal
81972783
12
Duodecimal
23551b53
16
Hexadecimal
4e2ce2f
20
Vigesimal
15c6bj3
36
Base36
1csylr
md5
3bfcde80ceda356a0f2a7584a7aed7f0
sha1
d60f1d860602a307a9210d433fde7f1fb16ddc3e
sha256
4784bb5f6dcbf2543d35d3a992b53f5fe0cbc18f9b016ff01aea08794b98e8c9
sha512
604bc06b4af4800ae56b47f9fb57fe7a84fd1923ccf2e6809974bc5e6f7d61b27169e096873a38b856dc36dbabd2567244eac4c1af635415f94f642479375839
ripemd-160
9b8d4993af159ec62000e3c412e6bfe4df0b1efb
Diameter
163945566
Circumference
515050185.73422
Area
2.111004855465E+16
Volume
2.3072659057198E+24
Surface area
8.4440194218602E+16
Circumference
515050185.73422
Perimeter
327891132
Area
6719537152765089
Diagonal
115927021.46407
Surface area
40317222916590534
Volume
5.5081916088405E+23
Space diagonal
141981024.99382
Perimeter
245918349
Area
2.909644937984E+15
Altitude
70990512.496909
Surface area
2.909644937984E+15
Volume
6.4914660644766E+22
Height
38642340.488022