256442524 has 12 divisors (see below), whose sum is σ = 483295624. Its totient is φ = 118358064.

The previous prime is 256442519. The next prime is 256442531. The reversal of 256442524 is 425244652.

It is a self number, because there is not a number n which added to its sum of digits gives 256442524.

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 in 3 ways as a sum of consecutive naturals, for example, 2465742 + ... + 2465845.

Almost surely, 2^256442524 is an apocalyptic number.

It is an amenable number.

256442524 is a deficient number, since it is larger than the sum of its proper divisors (226853100).

256442524 is a wasteful number, since it uses less digits than its factorization.

256442524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4931604 (or 4931602 counting only the distinct ones).

The product of its digits is 76800, while the sum is 34.

The square root of 256442524 is about 16013.8229039789. The cubic root of 256442524 is about 635.3260763550.

The spelling of 256442524 in words is "two hundred fifty-six million, four hundred forty-two thousand, five hundred twenty-four".