503660420 has 12 divisors (see below), whose sum is σ = 1057686924. Its totient is φ = 201464160.

The previous prime is 503660407. The next prime is 503660447. The reversal of 503660420 is 24066305.

It can be written as a sum of positive squares in 2 ways, for example, as 380406016 + 123254404 = 19504^2 + 11102^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 503660420.

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, 12591491 + ... + 12591530.

It is an arithmetic number, because the mean of its divisors is an integer number (88140577).

Almost surely, 2^503660420 is an apocalyptic number.

It is an amenable number.

503660420 is an abundant number, since it is smaller than the sum of its proper divisors (554026504).

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

503660420 is a wasteful number, since it uses less digits than its factorization.

503660420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25183030 (or 25183028 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 503660420 is about 22442.3799985652. The cubic root of 503660420 is about 795.6326701734.

It can be divided in two parts, 5036 and 60420, that added together give a palindrome (65456).

The spelling of 503660420 in words is "five hundred three million, six hundred sixty thousand, four hundred twenty".