256078828 has 12 divisors (see below), whose sum is σ = 456593760. Its totient is φ = 125623472.

The previous prime is 256078807. The next prime is 256078841. The reversal of 256078828 is 828870652.

It is a happy number.

It is a super-2 number, since 2×256078828² = 131152732299707168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603748 + ... + 604171.

It is an arithmetic number, because the mean of its divisors is an integer number (38049480).

Almost surely, 2^256078828 is an apocalyptic number.

It is an amenable number.

256078828 is a deficient number, since it is larger than the sum of its proper divisors (200514932).

256078828 is a wasteful number, since it uses less digits than its factorization.

256078828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207976 (or 1207974 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 256078828 is about 16002.4631853974. The cubic root of 256078828 is about 635.0255868335.

The spelling of 256078828 in words is "two hundred fifty-six million, seventy-eight thousand, eight hundred twenty-eight".