503720 has 48 divisors (see below), whose sum is σ = 1323540. Its totient is φ = 172032.

The previous prime is 503717. The next prime is 503743. The reversal of 503720 is 27305.

503720 = 78² + 79² + ... + 125².

It can be written as a sum of positive squares in 2 ways, for example, as 470596 + 33124 = 686^2 + 182^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 503720.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1832 + ... + 2088.

2⁵⁰³⁷²⁰ 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 503720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661770).

503720 is an abundant number, since it is smaller than the sum of its proper divisors (819820).

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

503720 is a wasteful number, since it uses less digits than its factorization.

503720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 503720 is about 709.7323439156. The cubic root of 503720 is about 79.5664041790.

The spelling of 503720 in words is "five hundred three thousand, seven hundred twenty".