256748 has 6 divisors (see below), whose sum is σ = 449316. Its totient is φ = 128372.

The previous prime is 256723. The next prime is 256757. The reversal of 256748 is 847652.

It is an unprimeable number.

256748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32090 + ... + 32097.

It is an arithmetic number, because the mean of its divisors is an integer number (74886).

2²⁵⁶⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

256748 is a deficient number, since it is larger than the sum of its proper divisors (192568).

256748 is a wasteful number, since it uses less digits than its factorization.

256748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64191 (or 64189 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 256748 is about 506.7030688678. The cubic root of 256748 is about 63.5578244436.

The spelling of 256748 in words is "two hundred fifty-six thousand, seven hundred forty-eight".