256884404 has 24 divisors (see below), whose sum is σ = 516085248. Its totient is φ = 109596960.

The previous prime is 256884403. The next prime is 256884443. The reversal of 256884404 is 404488652.

256884404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256884403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14327 + ... + 26814.

It is an arithmetic number, because the mean of its divisors is an integer number (21503552).

Almost surely, 2^256884404 is an apocalyptic number.

It is an amenable number.

256884404 is an abundant number, since it is smaller than the sum of its proper divisors (259200844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256884404 is a wasteful number, since it uses less digits than its factorization.

256884404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41375 (or 41373 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 41.

The square root of 256884404 is about 16027.6137961956. The cubic root of 256884404 is about 635.6907802901.

The spelling of 256884404 in words is "two hundred fifty-six million, eight hundred eighty-four thousand, four hundred four".