502778 has 16 divisors (see below), whose sum is σ = 807840. Its totient is φ = 234000.

The previous prime is 502771. The next prime is 502781. The reversal of 502778 is 877205.

It is a self number, because there is not a number n which added to its sum of digits gives 502778.

It is not an unprimeable number, because it can be changed into a prime (502771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3773 + ... + 3903.

It is an arithmetic number, because the mean of its divisors is an integer number (50490).

2⁵⁰²⁷⁷⁸ is an apocalyptic number.

502778 is a deficient number, since it is larger than the sum of its proper divisors (305062).

502778 is a wasteful number, since it uses less digits than its factorization.

502778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 502778 is about 709.0684029062. The cubic root of 502778 is about 79.5167745413.

The spelling of 502778 in words is "five hundred two thousand, seven hundred seventy-eight".