503963728 has 20 divisors (see below), whose sum is σ = 985074228. Its totient is φ = 249751040.

The previous prime is 503963701. The next prime is 503963729. The reversal of 503963728 is 827369305.

It can be written as a sum of positive squares in 2 ways, for example, as 140375104 + 363588624 = 11848^2 + 19068^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503963729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137563 + ... + 141178.

Almost surely, 2^503963728 is an apocalyptic number.

It is an amenable number.

503963728 is a deficient number, since it is larger than the sum of its proper divisors (481110500).

503963728 is a wasteful number, since it uses less digits than its factorization.

503963728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278862 (or 278856 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 503963728 is about 22449.1364644612. The cubic root of 503963728 is about 795.7923500680.

The spelling of 503963728 in words is "five hundred three million, nine hundred sixty-three thousand, seven hundred twenty-eight".