240423456 has 288 divisors, whose sum is σ = 819020160. Its totient is φ = 60383232.

The previous prime is 240423431. The next prime is 240423481. The reversal of 240423456 is 654324042.

It is an interprime number because it is at equal distance from previous prime (240423431) and next prime (240423481).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3293436 + ... + 3293508.

It is an arithmetic number, because the mean of its divisors is an integer number (2843820).

Almost surely, 2^240423456 is an apocalyptic number.

240423456 is a gapful number since it is divisible by the number (26) 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 240423456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409510080).

240423456 is an abundant number, since it is smaller than the sum of its proper divisors (578596704).

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

240423456 is a wasteful number, since it uses less digits than its factorization.

240423456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 240423456 is about 15505.5943452678. The cubic root of 240423456 is about 621.8117798446.

Adding to 240423456 its reverse (654324042), we get a palindrome (894747498).

The spelling of 240423456 in words is "two hundred forty million, four hundred twenty-three thousand, four hundred fifty-six".