256353404 has 36 divisors (see below), whose sum is σ = 481410384. Its totient is φ = 119410176.

The previous prime is 256353397. The next prime is 256353439. The reversal of 256353404 is 404353652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117992 + ... + 120144.

Almost surely, 2^256353404 is an apocalyptic number.

It is an amenable number.

256353404 is a deficient number, since it is larger than the sum of its proper divisors (225056980).

256353404 is a wasteful number, since it uses less digits than its factorization.

256353404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 256353404 is about 16011.0400661544. The cubic root of 256353404 is about 635.2524707516.

The spelling of 256353404 in words is "two hundred fifty-six million, three hundred fifty-three thousand, four hundred four".