256314464 has 24 divisors (see below), whose sum is σ = 576708048. Its totient is φ = 109848960.

The previous prime is 256314379. The next prime is 256314511. The reversal of 256314464 is 464413652.

It is a congruent number.

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, 571907 + ... + 572354.

It is an arithmetic number, because the mean of its divisors is an integer number (24029502).

Almost surely, 2^256314464 is an apocalyptic number.

It is an amenable number.

256314464 is an abundant number, since it is smaller than the sum of its proper divisors (320393584).

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

256314464 is a wasteful number, since it uses less digits than its factorization.

256314464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144278 (or 1144270 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 256314464 is about 16009.8239840418. The cubic root of 256314464 is about 635.2203042405.

The spelling of 256314464 in words is "two hundred fifty-six million, three hundred fourteen thousand, four hundred sixty-four".