540428 has 12 divisors (see below), whose sum is σ = 1080912. Its totient is φ = 231600.

The previous prime is 540391. The next prime is 540433. The reversal of 540428 is 824045.

540428 is an admirable number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

540428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9623 + ... + 9678.

It is an arithmetic number, because the mean of its divisors is an integer number (90076).

2⁵⁴⁰⁴²⁸ is an apocalyptic number.

It is an amenable number.

540428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

540428 is a wasteful number, since it uses less digits than its factorization.

540428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19312 (or 19310 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 540428 is about 735.1380822675. The cubic root of 540428 is about 81.4540370893.

The spelling of 540428 in words is "five hundred forty thousand, four hundred twenty-eight".