503128 has 16 divisors (see below), whose sum is σ = 959760. Its totient is φ = 247200.

The previous prime is 503123. The next prime is 503131. The reversal of 503128 is 821305.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503123) by changing a digit.

503128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 28 + ... + 1003.

It is an arithmetic number, because the mean of its divisors is an integer number (59985).

2⁵⁰³¹²⁸ is an apocalyptic number.

It is an amenable number.

503128 is a deficient number, since it is larger than the sum of its proper divisors (456632).

503128 is a wasteful number, since it uses less digits than its factorization.

503128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 503128 is about 709.3151626745. The cubic root of 503128 is about 79.5352216596.

The spelling of 503128 in words is "five hundred three thousand, one hundred twenty-eight".