Subtracting from 2790 its sum of digits (18), we obtain a palindrome (2772).
Adding to 2790 its product of nonzero digits (126), we get a square (2916 = 542).
2790 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
2790 is strictly pandigital in base 5.
It is a Curzon number.
It is a plaindrome in base 13.
It is a nialpdrome in base 15.
It is a congruent number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3744).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2790 is a wasteful number, since it uses less digits than its factorization.
2790 is an odious number, because the sum of its binary digits is odd.
The square root of 2790 is about 52.8204505850. The cubic root of 2790 is about 14.0777981664.
The spelling of 2790 in words is "two thousand, seven hundred ninety".