240404052 has 48 divisors (see below), whose sum is σ = 645196160. Its totient is φ = 68245632.

The previous prime is 240404009. The next prime is 240404053. The reversal of 240404052 is 250404042.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240404053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4074 + ... + 22302.

Almost surely, 2^240404052 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 240404052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322598080).

240404052 is an abundant number, since it is smaller than the sum of its proper divisors (404792108).

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

240404052 is a wasteful number, since it uses less digits than its factorization.

240404052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18400 (or 18398 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 240404052 is about 15504.9686229931. The cubic root of 240404052 is about 621.7950510825.

Adding to 240404052 its reverse (250404042), we get a palindrome (490808094).

The spelling of 240404052 in words is "two hundred forty million, four hundred four thousand, fifty-two".