504240020 has 12 divisors (see below), whose sum is σ = 1058904084. Its totient is φ = 201696000.

The previous prime is 504240007. The next prime is 504240029. The reversal of 504240020 is 20042405.

It can be written as a sum of positive squares in 2 ways, for example, as 269353744 + 234886276 = 16412^2 + 15326^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504240029) 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, 12605981 + ... + 12606020.

It is an arithmetic number, because the mean of its divisors is an integer number (88242007).

Almost surely, 2^504240020 is an apocalyptic number.

It is an amenable number.

504240020 is an abundant number, since it is smaller than the sum of its proper divisors (554664064).

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

504240020 is a wasteful number, since it uses less digits than its factorization.

504240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25212010 (or 25212008 counting only the distinct ones).

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

The square root of 504240020 is about 22455.2893546265. The cubic root of 504240020 is about 795.9377513336.

Adding to 504240020 its reverse (20042405), we get a palindrome (524282425).

The spelling of 504240020 in words is "five hundred four million, two hundred forty thousand, twenty".