It is a tau number, because it is divible by the number of its divisors (8).
It is a plaindrome in base 15.
It is a congruent number.
It is an unprimeable number.
8728 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
28728 is an apocalyptic number.
It is an amenable number.
8728 is a wasteful number, since it uses less digits than its factorization.
8728 is an evil number, because the sum of its binary digits is even.
The square root of 8728 is about 93.4237657130. The cubic root of 8728 is about 20.5891418568.
The spelling of 8728 in words is "eight thousand, seven hundred twenty-eight".