Adding to 28887 its sum of digits (33), we get a triangular number (28920 = T240).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a D-number.
28887 is a lucky number.
It is a nialpdrome in base 14.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28887.
228887 is an apocalyptic number.
28887 is an equidigital number, since it uses as much as digits as its factorization.
28887 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9632.
The square root of 28887 is about 169.9617604051. The cubic root of 28887 is about 30.6832115092.
The spelling of 28887 in words is "twenty-eight thousand, eight hundred eighty-seven".