2056456 has 16 divisors (see below), whose sum is σ = 4082940. Its totient is φ = 967680.

The previous prime is 2056441. The next prime is 2056459. The reversal of 2056456 is 6546502.

It can be written as a sum of positive squares in 2 ways, for example, as 2056356 + 100 = 1434^2 + 10^2 .

It is a super-2 number, since 2×2056456² = 8458022559872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2056459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7425 + ... + 7696.

2^2056456 is an apocalyptic number.

It is an amenable number.

2056456 is a deficient number, since it is larger than the sum of its proper divisors (2026484).

2056456 is a wasteful number, since it uses less digits than its factorization.

2056456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15144 (or 15140 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2056456 is about 1434.0348670796. The cubic root of 2056456 is about 127.1666236284.

The spelling of 2056456 in words is "two million, fifty-six thousand, four hundred fifty-six".