2782256 has 10 divisors (see below), whose sum is σ = 5390652. Its totient is φ = 1391120.

The previous prime is 2782217. The next prime is 2782279. The reversal of 2782256 is 6522872.

It is a d-powerful number, because it can be written as 2² + 7⁷ + 8² + 2⁷ + 2¹² + 5⁹ + 6⁴ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86930 + ... + 86961.

2^2782256 is an apocalyptic number.

It is an amenable number.

2782256 is a deficient number, since it is larger than the sum of its proper divisors (2608396).

2782256 is a wasteful number, since it uses less digits than its factorization.

2782256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173899 (or 173893 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 2782256 is about 1668.0095922986. The cubic root of 2782256 is about 140.6476119030.

Subtracting from 2782256 its sum of digits (32), we obtain a square (2782224 = 1668²).

The spelling of 2782256 in words is "two million, seven hundred eighty-two thousand, two hundred fifty-six".