504040040 has 64 divisors (see below), whose sum is σ = 1298505600. Its totient is φ = 172493568.

The previous prime is 504040007. The next prime is 504040049. The reversal of 504040040 is 40040405.

It is not an unprimeable number, because it can be changed into a prime (504040049) 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, 188231 + ... + 190889.

It is an arithmetic number, because the mean of its divisors is an integer number (20289150).

Almost surely, 2^504040040 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 504040040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649252800).

504040040 is an abundant number, since it is smaller than the sum of its proper divisors (794465560).

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

504040040 is a wasteful number, since it uses less digits than its factorization.

504040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3350 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 504040040 is about 22450.8360646102. The cubic root of 504040040 is about 795.8325152872.

Adding to 504040040 its reverse (40040405), we get a palindrome (544080445).

The spelling of 504040040 in words is "five hundred four million, forty thousand, forty".