503031840 has 144 divisors (see below), whose sum is σ = 1672913088. Its totient is φ = 127037952.

The previous prime is 503031811. The next prime is 503031857. The reversal of 503031840 is 48130305.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 503031840.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171829 + ... + 174731.

It is an arithmetic number, because the mean of its divisors is an integer number (11617452).

Almost surely, 2^503031840 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 503031840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836456544).

503031840 is an abundant number, since it is smaller than the sum of its proper divisors (1169881248).

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

503031840 is a wasteful number, since it uses less digits than its factorization.

503031840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959 (or 2932 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 503031840 is about 22428.3713184886. The cubic root of 503031840 is about 795.3015429816.

The spelling of 503031840 in words is "five hundred three million, thirty-one thousand, eight hundred forty".