256280 has 32 divisors (see below), whose sum is σ = 594000. Its totient is φ = 99456.

The previous prime is 256279. The next prime is 256301. The reversal of 256280 is 82652.

It is a happy number.

256280 is nontrivially palindromic in base 15.

256280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 8.

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, 1646 + ... + 1794.

2²⁵⁶²⁸⁰ is an apocalyptic number.

256280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297000).

256280 is an abundant number, since it is smaller than the sum of its proper divisors (337720).

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

256280 is a wasteful number, since it uses less digits than its factorization.

256280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 256280 is about 506.2410493036. The cubic root of 256280 is about 63.5191832426.

The spelling of 256280 in words is "two hundred fifty-six thousand, two hundred eighty".