It is a nude number because it is divisible by every one of its digits.
It is a self number, because there is not a number n which added to its sum of digits gives 81264.
It is a congruent number.
It is an unprimeable number.
281264 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
81264 is a wasteful number, since it uses less digits than its factorization.
81264 is an odious number, because the sum of its binary digits is odd.
The square root of 81264 is about 285.0684128415. The cubic root of 81264 is about 43.3144427852.
The spelling of 81264 in words is "eighty-one thousand, two hundred sixty-four".