256788604 has 48 divisors (see below), whose sum is σ = 496365408. Its totient is φ = 115734528.

The previous prime is 256788599. The next prime is 256788607. The reversal of 256788604 is 406887652.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256788607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154144 + ... + 155800.

It is an arithmetic number, because the mean of its divisors is an integer number (10340946).

Almost surely, 2^256788604 is an apocalyptic number.

It is an amenable number.

256788604 is a deficient number, since it is larger than the sum of its proper divisors (239576804).

256788604 is a wasteful number, since it uses less digits than its factorization.

256788604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1772 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 256788604 is about 16024.6249254078. The cubic root of 256788604 is about 635.6117476620.

The spelling of 256788604 in words is "two hundred fifty-six million, seven hundred eighty-eight thousand, six hundred four".