81563838 is an even 8-digits composite number following 81563837
and preceding 81563839 . In scientific notation, it is written as 8.1563838 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 27187944 positive integers (up to 81563838) that are relatively prime to 81563838.
81563838 has 8 divisors, whose sum is 163127688
The reverse of 81563838 is 83836518
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighty-one million five hundred sixty-three thousand eight hundred thirty-eight
Scientific notation
8.1563838 × 10^7
Engineering notation
8.1563838 × 10^6
Prime Factorization
2 × 3 × 13593973
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81563838
Product of the distinct prime numbers
The prime factorization of 81563838 is 2 × 3 × 13593973.
Since it has a total of 3 prime factors.
5 , 1 , 6 , 17 , 780 , 374 , 3232 , 5914 , 7944 , 82195 , 757658 , 361113 , 6728382 , 4597184 , 42759507 , 43546621 , 511055303 , 301391201 , 4353560715 , 3487997582
n×2
163127676
n×3
244691514
n×4
326255352
n×5
407819190
n÷2
40781919
n÷3
27187946
n÷3
20390959.5
n÷5
16312767.6
n2
6652659669290244
n3
5.4261645553512E+23
n4
4.4257880675401E+31
n5
3.6098426096317E+39
2 √n
9031.2700103585
3 √n
433.67649516971
4 √n
95.03299432491
5 √n
38.220778670748
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
-81563837
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 81563838 can be divided by 8 positive divisors.
The sum of these divisors (counting 81563838) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111001001000010111110
3
Ternary
12200110212112220
4
Quaternary
10313021002332
5
Quinary
131340020323
6
Senary
12032110210
8
Octal
467110276
10
Decimal
81563838
12
Duodecimal
23395366
16
Hexadecimal
4dc90be
20
Vigesimal
159f9bi
36
Base36
1ck726
md5
19ef96b01db7954a40df94167175fa25
sha1
21c329f13f73f1f938675e58a12ed43cf902cf00
sha256
bd9625ea4c6a935ce42427796d25cb70ca010085d103cb23b16750c9db089c9b
sha512
0fc782454fd70b3eba73c32be22ad4c88312d895d4ff945db91a4715dcebfb0ff21a7a6fc272cfd120399fd35ddd8228462ac1198d77937c49ef144478a195c3
ripemd-160
251484279a6eac436d392bc1df2d3fb8a16af59e
Diameter
163127676
Circumference
512480708.51878
Area
2.0899946743875E+16
Volume
2.2729064939014E+24
Surface area
8.3599786975501E+16
Circumference
512480708.51878
Perimeter
326255352
Area
6652659669290244
Diagonal
115348685.8988
Surface area
39915958015741464
Volume
5.4261645553512E+23
Space diagonal
141272711.47632
Perimeter
244691514
Area
2.8806861381688E+15
Altitude
70636355.738159
Surface area
2.8806861381688E+15
Volume
6.3947962548716E+22
Height
38449561.966267