2787256 has 8 divisors (see below), whose sum is σ = 5226120. Its totient is φ = 1393624.

The previous prime is 2787251. The next prime is 2787259. The reversal of 2787256 is 6527872.

2787256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174196 + ... + 174211.

It is an arithmetic number, because the mean of its divisors is an integer number (653265).

2^2787256 is an apocalyptic number.

It is an amenable number.

2787256 is a deficient number, since it is larger than the sum of its proper divisors (2438864).

2787256 is a wasteful number, since it uses less digits than its factorization.

2787256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348413 (or 348409 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 2787256 is about 1669.5077118720. The cubic root of 2787256 is about 140.7318142213.

The spelling of 2787256 in words is "two million, seven hundred eighty-seven thousand, two hundred fifty-six".