2056816 has 10 divisors (see below), whose sum is σ = 3985112. Its totient is φ = 1028400.

The previous prime is 2056787. The next prime is 2056829. The reversal of 2056816 is 6186502.

It is an Ulam number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 64260 + ... + 64291.

2^2056816 is an apocalyptic number.

It is an amenable number.

2056816 is a deficient number, since it is larger than the sum of its proper divisors (1928296).

2056816 is a wasteful number, since it uses less digits than its factorization.

2056816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128559 (or 128553 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2056816 is about 1434.1603815473. The cubic root of 2056816 is about 127.1740437261.

It can be divided in two parts, 205 and 6816, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 2056816 in words is "two million, fifty-six thousand, eight hundred sixteen".