503240 has 32 divisors (see below), whose sum is σ = 1183680. Its totient is φ = 192192.

The previous prime is 503233. The next prime is 503249. The reversal of 503240 is 42305.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 503240.

It is not an unprimeable number, because it can be changed into a prime (503249) by changing a digit.

503240 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 7 ways as a sum of consecutive naturals, for example, 647 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (36990).

2⁵⁰³²⁴⁰ 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 503240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591840).

503240 is an abundant number, since it is smaller than the sum of its proper divisors (680440).

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

503240 is a wasteful number, since it uses less digits than its factorization.

503240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 503240 is about 709.3941076722. The cubic root of 503240 is about 79.5411229305.

Adding to 503240 its reverse (42305), we get a palindrome (545545).

The spelling of 503240 in words is "five hundred three thousand, two hundred forty".