256278 has 24 divisors (see below), whose sum is σ = 564984. Its totient is φ = 77440.

The previous prime is 256219. The next prime is 256279. The reversal of 256278 is 872652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256279) by changing a digit.

256278 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 in 11 ways as a sum of consecutive naturals, for example, 550 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (23541).

2²⁵⁶²⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282492).

256278 is an abundant number, since it is smaller than the sum of its proper divisors (308706).

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

256278 is a wasteful number, since it uses less digits than its factorization.

256278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 369 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 256278 is about 506.2390739562. The cubic root of 256278 is about 63.5190180083.

It can be divided in two parts, 2 and 56278, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 256278 in words is "two hundred fifty-six thousand, two hundred seventy-eight".