549228 has 24 divisors (see below), whose sum is σ = 1317232. Its totient is φ = 177984.

The previous prime is 549221. The next prime is 549229. The reversal of 549228 is 822945.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 549195 and 549204.

It is not an unprimeable number, because it can be changed into a prime (549221) 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, 175 + ... + 1062.

2⁵⁴⁹²²⁸ is an apocalyptic number.

It is an amenable number.

549228 is an abundant number, since it is smaller than the sum of its proper divisors (768004).

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

549228 is a wasteful number, since it uses less digits than its factorization.

549228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1279 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 549228 is about 741.0991836455. The cubic root of 549228 is about 81.8937748060.

It can be divided in two parts, 549 and 228, that added together give a palindrome (777).

The spelling of 549228 in words is "five hundred forty-nine thousand, two hundred twenty-eight".