Adding to 2638 its product of digits (288), we get a triangular number (2926 = T76).
2638 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
2638 is strictly pandigital in base 5.
It is a plaindrome in base 13.
It is a nialpdrome in base 14.
It is a congruent number.
22638 is an apocalyptic number.
2638 is a wasteful number, since it uses less digits than its factorization.
2638 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1321.
The square root of 2638 is about 51.3614641536. The cubic root of 2638 is about 13.8173554656.
The spelling of 2638 in words is "two thousand, six hundred thirty-eight".