549013728 has 48 divisors (see below), whose sum is σ = 1460921616. Its totient is φ = 180495360.

The previous prime is 549013643. The next prime is 549013741. The reversal of 549013728 is 827310945.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32163 + ... + 46178.

It is an arithmetic number, because the mean of its divisors is an integer number (30435867).

Almost surely, 2^549013728 is an apocalyptic number.

It is an amenable number.

549013728 is an abundant number, since it is smaller than the sum of its proper divisors (911907888).

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

549013728 is a wasteful number, since it uses less digits than its factorization.

549013728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78427 (or 78419 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 549013728 is about 23431.0419742699. The cubic root of 549013728 is about 818.8312359774.

The spelling of 549013728 in words is "five hundred forty-nine million, thirteen thousand, seven hundred twenty-eight".