256376 has 16 divisors (see below), whose sum is σ = 488400. Its totient is φ = 126144.

The previous prime is 256369. The next prime is 256391. The reversal of 256376 is 673652.

256376 = 119² + 120² + ... + 134².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365 + ... + 803.

It is an arithmetic number, because the mean of its divisors is an integer number (30525).

2²⁵⁶³⁷⁶ is an apocalyptic number.

It is an amenable number.

256376 is a deficient number, since it is larger than the sum of its proper divisors (232024).

256376 is a wasteful number, since it uses less digits than its factorization.

256376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 514 counting only the distinct ones).

The product of its digits is 7560, while the sum is 29.

The square root of 256376 is about 506.3358569171. The cubic root of 256376 is about 63.5271134756.

The spelling of 256376 in words is "two hundred fifty-six thousand, three hundred seventy-six".