240456 has 32 divisors (see below), whose sum is σ = 617760. Its totient is φ = 77952.

The previous prime is 240437. The next prime is 240473. The reversal of 240456 is 654042.

It is a happy number.

240456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

240456 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 7 ways as a sum of consecutive naturals, for example, 916 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (19305).

2²⁴⁰⁴⁵⁶ 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 240456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308880).

240456 is an abundant number, since it is smaller than the sum of its proper divisors (377304).

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

240456 is a wasteful number, since it uses less digits than its factorization.

240456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 240456 is about 490.3631307511. The cubic root of 240456 is about 62.1839834969.

Adding to 240456 its reverse (654042), we get a palindrome (894498).

It can be divided in two parts, 240 and 456, that added together give a palindrome (696).

The spelling of 240456 in words is "two hundred forty thousand, four hundred fifty-six".