549745028 has 48 divisors (see below), whose sum is σ = 1115420544. Its totient is φ = 232216320.

The previous prime is 549745019. The next prime is 549745033. The reversal of 549745028 is 820547945.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 549745028.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841550 + ... + 842202.

It is an arithmetic number, because the mean of its divisors is an integer number (23237928).

Almost surely, 2^549745028 is an apocalyptic number.

It is an amenable number.

549745028 is an abundant number, since it is smaller than the sum of its proper divisors (565675516).

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

549745028 is a wasteful number, since it uses less digits than its factorization.

549745028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 549745028 is about 23446.6421476509. The cubic root of 549745028 is about 819.1946425564.

The spelling of 549745028 in words is "five hundred forty-nine million, seven hundred forty-five thousand, twenty-eight".