256424492 has 12 divisors (see below), whose sum is σ = 451431120. Its totient is φ = 127444176.

The previous prime is 256424479. The next prime is 256424501. The reversal of 256424492 is 294424652.

256424492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191267 + ... + 192602.

It is an arithmetic number, because the mean of its divisors is an integer number (37619260).

Almost surely, 2^256424492 is an apocalyptic number.

It is an amenable number.

256424492 is a deficient number, since it is larger than the sum of its proper divisors (195006628).

256424492 is a wasteful number, since it uses less digits than its factorization.

256424492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384040 (or 384038 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 256424492 is about 16013.2598804865. The cubic root of 256424492 is about 635.3111848201.

The spelling of 256424492 in words is "two hundred fifty-six million, four hundred twenty-four thousand, four hundred ninety-two".