256288 has 12 divisors (see below), whose sum is σ = 504630. Its totient is φ = 128128.

The previous prime is 256279. The next prime is 256301. The reversal of 256288 is 882652.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 51984 = 452^2 + 228^2 .

256288 is a modest number, since divided by 288 gives 256 as remainder.

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3973 + ... + 4036.

2²⁵⁶²⁸⁸ is an apocalyptic number.

It is an amenable number.

256288 is a deficient number, since it is larger than the sum of its proper divisors (248342).

256288 is an equidigital number, since it uses as much as digits as its factorization.

256288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019 (or 8011 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 256288 is about 506.2489506162. The cubic root of 256288 is about 63.5198441710.

It can be divided in two parts, 2562 and 88, that multiplied together give a triangular number (225456 = T₆₇₁).

The spelling of 256288 in words is "two hundred fifty-six thousand, two hundred eighty-eight".