502728 has 16 divisors (see below), whose sum is σ = 1256880. Its totient is φ = 167568.

The previous prime is 502717. The next prime is 502729. The reversal of 502728 is 827205.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 20947 = 502728 / (5 + 0 + 2 + 7 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 502698 and 502707.

It is not an unprimeable number, because it can be changed into a prime (502729) 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, 10450 + ... + 10497.

It is an arithmetic number, because the mean of its divisors is an integer number (78555).

2⁵⁰²⁷²⁸ is an apocalyptic number.

It is an amenable number.

502728 is an abundant number, since it is smaller than the sum of its proper divisors (754152).

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

502728 is a wasteful number, since it uses less digits than its factorization.

502728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20956 (or 20952 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 502728 is about 709.0331445003. The cubic root of 502728 is about 79.5141385400.

The spelling of 502728 in words is "five hundred two thousand, seven hundred twenty-eight".