It is an Ulam number.
It is a nialpdrome in base 13.
It is a congruent number.
227800 is an apocalyptic number.
27800 is a gapful number since it is divisible by the number (20) 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 27800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32550).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
27800 is a wasteful number, since it uses less digits than its factorization.
27800 is an odious number, because the sum of its binary digits is odd.
The square root of 27800 is about 166.7333200053. The cubic root of 27800 is about 30.2934171527.
The spelling of 27800 in words is "twenty-seven thousand, eight hundred".