It is a congruent number.
It is an unprimeable number.
272800 is an apocalyptic number.
72800 is a gapful number since it is divisible by the number (70) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 72800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109368).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72800 is a wasteful number, since it uses less digits than its factorization.
72800 is an evil number, because the sum of its binary digits is even.
The square root of 72800 is about 269.8147512646. The cubic root of 72800 is about 41.7551895733.
The spelling of 72800 in words is "seventy-two thousand, eight hundred".