549328 has 40 divisors (see below), whose sum is σ = 1215200. Its totient is φ = 238464.

The previous prime is 549323. The next prime is 549331. The reversal of 549328 is 823945.

It is a super-2 number, since 2×549328² = 603522503168, which contains 22 as substring.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 549328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3883 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (30380).

2⁵⁴⁹³²⁸ 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 549328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607600).

549328 is an abundant number, since it is smaller than the sum of its proper divisors (665872).

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

549328 is a wasteful number, since it uses less digits than its factorization.

549328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 173 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 549328 is about 741.1666479274. The cubic root of 549328 is about 81.8987447398.

The spelling of 549328 in words is "five hundred forty-nine thousand, three hundred twenty-eight".