543654728 has 16 divisors (see below), whose sum is σ = 1020187500. Its totient is φ = 271604736.

The previous prime is 543654721. The next prime is 543654743. The reversal of 543654728 is 827456345.

It can be written as a sum of positive squares in 2 ways, for example, as 514473124 + 29181604 = 22682^2 + 5402^2 .

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 not an unprimeable number, because it can be changed into a prime (543654721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17213 + ... + 37196.

Almost surely, 2^543654728 is an apocalyptic number.

It is an amenable number.

543654728 is a deficient number, since it is larger than the sum of its proper divisors (476532772).

543654728 is a wasteful number, since it uses less digits than its factorization.

543654728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55664 (or 55660 counting only the distinct ones).

The product of its digits is 806400, while the sum is 44.

The square root of 543654728 is about 23316.4046971226. The cubic root of 543654728 is about 816.1582778003.

The spelling of 543654728 in words is "five hundred forty-three million, six hundred fifty-four thousand, seven hundred twenty-eight".