504040 has 16 divisors (see below), whose sum is σ = 1134180. Its totient is φ = 201600.

The previous prime is 504017. The next prime is 504047. The reversal of 504040 is 40405.

It can be written as a sum of positive squares in 2 ways, for example, as 492804 + 11236 = 702^2 + 106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 504040.

It is not an unprimeable number, because it can be changed into a prime (504047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6261 + ... + 6340.

2⁵⁰⁴⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

504040 is an abundant number, since it is smaller than the sum of its proper divisors (630140).

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

504040 is a wasteful number, since it uses less digits than its factorization.

504040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612 (or 12608 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 504040 is about 709.9577452215. The cubic root of 504040 is about 79.5832494235.

Adding to 504040 its reverse (40405), we get a palindrome (544445).

The spelling of 504040 in words is "five hundred four thousand, forty".