220504 has 16 divisors (see below), whose sum is σ = 423720. Its totient is φ = 107520.

The previous prime is 220471. The next prime is 220511. The reversal of 220504 is 405022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24 + ... + 664.

2²²⁰⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

220504 is a deficient number, since it is larger than the sum of its proper divisors (203216).

220504 is a wasteful number, since it uses less digits than its factorization.

220504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 220504 is about 469.5785344327. The cubic root of 220504 is about 60.4141714916.

Adding to 220504 its reverse (405022), we get a palindrome (625526).

The spelling of 220504 in words is "two hundred twenty thousand, five hundred four".