540409028 has 24 divisors (see below), whose sum is σ = 970341120. Its totient is φ = 263190080.

The previous prime is 540409027. The next prime is 540409031. The reversal of 540409028 is 820904045.

It is a junction number, because it is equal to n+sod(n) for n = 540408985 and 540409003.

It is not an unprimeable number, because it can be changed into a prime (540409027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115625 + ... + 120207.

It is an arithmetic number, because the mean of its divisors is an integer number (40430880).

Almost surely, 2^540409028 is an apocalyptic number.

It is an amenable number.

540409028 is a deficient number, since it is larger than the sum of its proper divisors (429932092).

540409028 is a wasteful number, since it uses less digits than its factorization.

540409028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347 (or 5345 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 540409028 is about 23246.6992925878. The cubic root of 540409028 is about 814.5308391633.

The spelling of 540409028 in words is "five hundred forty million, four hundred nine thousand, twenty-eight".