256488 has 16 divisors (see below), whose sum is σ = 641280. Its totient is φ = 85488.

The previous prime is 256483. The next prime is 256489. The reversal of 256488 is 884652.

It is not an unprimeable number, because it can be changed into a prime (256483) by changing a digit.

256488 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 5320 + ... + 5367.

It is an arithmetic number, because the mean of its divisors is an integer number (40080).

2²⁵⁶⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

256488 is an abundant number, since it is smaller than the sum of its proper divisors (384792).

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

256488 is a wasteful number, since it uses less digits than its factorization.

256488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10696 (or 10692 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 256488 is about 506.4464433679. The cubic root of 256488 is about 63.5363629124.

The spelling of 256488 in words is "two hundred fifty-six thousand, four hundred eighty-eight".