2788856 has 16 divisors (see below), whose sum is σ = 5976240. Its totient is φ = 1195200.

The previous prime is 2788831. The next prime is 2788889. The reversal of 2788856 is 6588872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24845 + ... + 24956.

It is an arithmetic number, because the mean of its divisors is an integer number (373515).

2^2788856 is an apocalyptic number.

It is an amenable number.

2788856 is an abundant number, since it is smaller than the sum of its proper divisors (3187384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2788856 is a wasteful number, since it uses less digits than its factorization.

2788856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49814 (or 49810 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The square root of 2788856 is about 1669.9868262953. The cubic root of 2788856 is about 140.7587376938.

Adding to 2788856 its sum of digits (44), we get a square (2788900 = 1670²).

The spelling of 2788856 in words is "two million, seven hundred eighty-eight thousand, eight hundred fifty-six".