549866828 has 18 divisors (see below), whose sum is σ = 1119372156. Its totient is φ = 235657128.

The previous prime is 549866797. The next prime is 549866869. The reversal of 549866828 is 828668945.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1402526 + ... + 1402917.

It is an arithmetic number, because the mean of its divisors is an integer number (62187342).

Almost surely, 2^549866828 is an apocalyptic number.

It is an amenable number.

549866828 is an abundant number, since it is smaller than the sum of its proper divisors (569505328).

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

549866828 is a wasteful number, since it uses less digits than its factorization.

549866828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805461 (or 2805452 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 56.

The square root of 549866828 is about 23449.2393906498. The cubic root of 549866828 is about 819.2551375947.

The spelling of 549866828 in words is "five hundred forty-nine million, eight hundred sixty-six thousand, eight hundred twenty-eight".