502540404 has 12 divisors (see below), whose sum is σ = 1172594304. Its totient is φ = 167513464.

The previous prime is 502540393. The next prime is 502540427. The reversal of 502540404 is 404045205.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20939172 + ... + 20939195.

It is an arithmetic number, because the mean of its divisors is an integer number (97716192).

Almost surely, 2^502540404 is an apocalyptic number.

It is an amenable number.

502540404 is an abundant number, since it is smaller than the sum of its proper divisors (670053900).

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

502540404 is a wasteful number, since it uses less digits than its factorization.

502540404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41878374 (or 41878372 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 502540404 is about 22417.4129640331. The cubic root of 502540404 is about 795.0424691525.

Adding to 502540404 its reverse (404045205), we get a palindrome (906585609).

The spelling of 502540404 in words is "five hundred two million, five hundred forty thousand, four hundred four".