540728 has 16 divisors (see below), whose sum is σ = 1021680. Its totient is φ = 268288.

The previous prime is 540713. The next prime is 540751. The reversal of 540728 is 827045.

It is a junction number, because it is equal to n+sod(n) for n = 540697 and 540706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925 + ... + 2187.

It is an arithmetic number, because the mean of its divisors is an integer number (63855).

2⁵⁴⁰⁷²⁸ is an apocalyptic number.

It is an amenable number.

540728 is a deficient number, since it is larger than the sum of its proper divisors (480952).

540728 is a wasteful number, since it uses less digits than its factorization.

540728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 540728 is about 735.3420972581. The cubic root of 540728 is about 81.4691064361.

The spelling of 540728 in words is "five hundred forty thousand, seven hundred twenty-eight".