503385840 has 200 divisors, whose sum is σ = 1764650448. Its totient is φ = 132986880.

The previous prime is 503385809. The next prime is 503385877. The reversal of 503385840 is 48583305.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 503385795 and 503385804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 848584 + ... + 849176.

Almost surely, 2^503385840 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 503385840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882325224).

503385840 is an abundant number, since it is smaller than the sum of its proper divisors (1261264608).

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

503385840 is a wasteful number, since it uses less digits than its factorization.

503385840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 503385840 is about 22436.2617207056. The cubic root of 503385840 is about 795.4880591604.

The spelling of 503385840 in words is "five hundred three million, three hundred eighty-five thousand, eight hundred forty".