503129928 has 128 divisors (see below), whose sum is σ = 1482117120. Its totient is φ = 139345920.

The previous prime is 503129911. The next prime is 503129929. The reversal of 503129928 is 829921305.

It is not an unprimeable number, because it can be changed into a prime (503129929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1856433 + ... + 1856703.

It is an arithmetic number, because the mean of its divisors is an integer number (11579040).

Almost surely, 2^503129928 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 503129928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741058560).

503129928 is an abundant number, since it is smaller than the sum of its proper divisors (978987192).

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

503129928 is a wasteful number, since it uses less digits than its factorization.

503129928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 503129928 is about 22430.5579065702. The cubic root of 503129928 is about 795.3532325313.

The spelling of 503129928 in words is "five hundred three million, one hundred twenty-nine thousand, nine hundred twenty-eight".