It is a happy number.
2800 is nontrivially palindromic in base 3.
2800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a nialpdrome in base 5 and base 7.
It is a zygodrome in base 4.
It is a congruent number.
2800 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 2800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3844).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2800 is a wasteful number, since it uses less digits than its factorization.
2800 is an evil number, because the sum of its binary digits is even.
The square root of 2800 is about 52.9150262213. The cubic root of 2800 is about 14.0945974641.
Adding to 2800 its reverse (82), we get a palindrome (2882).
The spelling of 2800 in words is "two thousand, eight hundred".