540404028 has 48 divisors (see below), whose sum is σ = 1446251520. Its totient is φ = 174322800.

The previous prime is 540404027. The next prime is 540404057. The reversal of 540404028 is 820404045.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 540403992 and 540404010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540404027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77358 + ... + 84053.

It is an arithmetic number, because the mean of its divisors is an integer number (30130240).

Almost surely, 2^540404028 is an apocalyptic number.

It is an amenable number.

540404028 is an abundant number, since it is smaller than the sum of its proper divisors (905847492).

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

540404028 is a wasteful number, since it uses less digits than its factorization.

540404028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161455 (or 161447 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 540404028 is about 23246.5917501900. The cubic root of 540404028 is about 814.5283270743.

The spelling of 540404028 in words is "five hundred forty million, four hundred four thousand, twenty-eight".