340256 has 48 divisors (see below), whose sum is σ = 806400. Its totient is φ = 141120.

The previous prime is 340237. The next prime is 340261. The reversal of 340256 is 652043.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340256.

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, 10961 + ... + 10991.

It is an arithmetic number, because the mean of its divisors is an integer number (16800).

2³⁴⁰²⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403200).

340256 is an abundant number, since it is smaller than the sum of its proper divisors (466144).

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

340256 is an equidigital number, since it uses as much as digits as its factorization.

340256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 340256 is about 583.3146663680. The cubic root of 340256 is about 69.8128333313.

Adding to 340256 its reverse (652043), we get a palindrome (992299).

The spelling of 340256 in words is "three hundred forty thousand, two hundred fifty-six".