549472728 has 32 divisors (see below), whose sum is σ = 1569922560. Its totient is φ = 156992160.

The previous prime is 549472717. The next prime is 549472733. The reversal of 549472728 is 827274945.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1635168 + ... + 1635503.

It is an arithmetic number, because the mean of its divisors is an integer number (49060080).

Almost surely, 2^549472728 is an apocalyptic number.

It is an amenable number.

549472728 is an abundant number, since it is smaller than the sum of its proper divisors (1020449832).

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

549472728 is a wasteful number, since it uses less digits than its factorization.

549472728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270687 (or 3270683 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 549472728 is about 23440.8346267790. The cubic root of 549472728 is about 819.0593655766.

It can be divided in two parts, 54947 and 2728, that added together give a palindrome (57675).

The spelling of 549472728 in words is "five hundred forty-nine million, four hundred seventy-two thousand, seven hundred twenty-eight".