503000730 has 48 divisors (see below), whose sum is σ = 1349996544. Its totient is φ = 129805920.

The previous prime is 503000717. The next prime is 503000741. The reversal of 503000730 is 37000305.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 87354 + ... + 92933.

It is an arithmetic number, because the mean of its divisors is an integer number (28124928).

Almost surely, 2^503000730 is an apocalyptic number.

503000730 is an abundant number, since it is smaller than the sum of its proper divisors (846995814).

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

503000730 is a wasteful number, since it uses less digits than its factorization.

503000730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180331 (or 180328 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 18.

The square root of 503000730 is about 22427.6777665455. The cubic root of 503000730 is about 795.2851475045.

The spelling of 503000730 in words is "five hundred three million, seven hundred thirty", and thus it is an aban number.