256385692 has 24 divisors (see below), whose sum is σ = 468782496. Its totient is φ = 122462208.

The previous prime is 256385671. The next prime is 256385719. The reversal of 256385692 is 296583652.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104868 + ... + 107284.

It is an arithmetic number, because the mean of its divisors is an integer number (19532604).

Almost surely, 2^256385692 is an apocalyptic number.

It is an amenable number.

256385692 is a deficient number, since it is larger than the sum of its proper divisors (212396804).

256385692 is a wasteful number, since it uses less digits than its factorization.

256385692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597 (or 3595 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The square root of 256385692 is about 16012.0483386730. The cubic root of 256385692 is about 635.2791398867.

The spelling of 256385692 in words is "two hundred fifty-six million, three hundred eighty-five thousand, six hundred ninety-two".