2749256 has 16 divisors (see below), whose sum is σ = 5173740. Its totient is φ = 1369600.

The previous prime is 2749247. The next prime is 2749277. The reversal of 2749256 is 6529472.

2749256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1876900 + 872356 = 1370^2 + 934^2 .

It is an Ulam number.

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

Its product of digits (30240) is a multiple of the sum of its prime divisors (1260).

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2780 + ... + 3636.

2^2749256 is an apocalyptic number.

It is an amenable number.

2749256 is a deficient number, since it is larger than the sum of its proper divisors (2424484).

2749256 is a wasteful number, since it uses less digits than its factorization.

2749256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1260 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 2749256 is about 1658.0880555628. The cubic root of 2749256 is about 140.0893307431.

The spelling of 2749256 in words is "two million, seven hundred forty-nine thousand, two hundred fifty-six".