503240304 has 80 divisors (see below), whose sum is σ = 1491396608. Its totient is φ = 143237376.

The previous prime is 503240263. The next prime is 503240317. The reversal of 503240304 is 403042305.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90369 + ... + 95775.

Almost surely, 2^503240304 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 503240304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745698304).

503240304 is an abundant number, since it is smaller than the sum of its proper divisors (988156304).

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

503240304 is a wasteful number, since it uses less digits than its factorization.

503240304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5702 (or 5696 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 503240304 is about 22433.0181651957. The cubic root of 503240304 is about 795.4113894703.

Adding to 503240304 its reverse (403042305), we get a palindrome (906282609).

The spelling of 503240304 in words is "five hundred three million, two hundred forty thousand, three hundred four".