Wednesday, December 5, 2018

Number of the day: 32383

Properties of the number 32383:

32383 = 13 × 47 × 53 is a sphenic number and squarefree.
32383 has 3 distinct prime factors, 8 divisors, 11 antidivisors and 28704 totatives.
32383 has a prime digit sum 19 in base 10.
Reversing the decimal digits of 32383 results in a semiprime.
32383 = 161922 - 161912 = 12522 - 12392 = 3682 - 3212 = 3322 - 2792 is the difference of 2 nonnegative squares in 4 ways.
32383 is the sum of 2 positive triangular numbers.
32383 is the difference of 2 positive pentagonal numbers in 4 ways.
32383 is not the sum of 3 positive squares.
323832 = 171082 + 274952 = 52172 + 319602 = 188002 + 263672 = 124552 + 298922 is the sum of 2 positive squares in 4 ways.
323832 is the sum of 3 positive squares.
32383 is a proper divisor of 65912 - 1.
32383 = '3' + '2383' is the concatenation of 2 prime numbers.
32383 is palindromic in (at least) the following bases: 8, 32, -2, and -71.
32383 in base 8 = 77177 and consists of only the digits '1' and '7'.
32383 in base 32 = vjv and consists of only the digits 'j' and 'v'.

The number 32383 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequences (among others):

Sequence numbers and descriptions below are taken from OEIS.
A043452: Numbers n such that number of 7's in base 8 is 4.
A049886: a(n)=a(1)+a(2)+...+a(n-1)-a(m), where m=n-1-2^p and 2^p<n-1<=2^(p+1).
A052817: Cycles of rooted trees t where for each t all subtrees at root are distinct. n is total number of nodes.
A070835: Numbers n such that phi(reverse(n)) = sigma(n).
A195460: 2^(2*n+1) - 3*2^n - 1.
A273406: Partial sums of the number of active (ON,black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 673", based on the 5-celled von Neumann neighborhood.
A273833: Partial sums of the number of active (ON,black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 961", based on the 5-celled von Neumann neighborhood.

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