28656 is a `hidden beast` number, since 2 + 8 + 656 = 666.
It is a congruent number.
228656 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 28656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40300).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28656 is a wasteful number, since it uses less digits than its factorization.
28656 is an evil number, because the sum of its binary digits is even.
The square root of 28656 is about 169.2808317560. The cubic root of 28656 is about 30.6012046175.
The spelling of 28656 in words is "twenty-eight thousand, six hundred fifty-six".