540645428 has 6 divisors (see below), whose sum is σ = 946129506. Its totient is φ = 270322712.

The previous prime is 540645419. The next prime is 540645431. The reversal of 540645428 is 824546045.

It can be written as a sum of positive squares in only one way, i.e., 300953104 + 239692324 = 17348^2 + 15482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 540645391 and 540645400.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 67580675 + ... + 67580682.

It is an arithmetic number, because the mean of its divisors is an integer number (157688251).

Almost surely, 2^540645428 is an apocalyptic number.

It is an amenable number.

540645428 is a deficient number, since it is larger than the sum of its proper divisors (405484078).

540645428 is a wasteful number, since it uses less digits than its factorization.

540645428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135161361 (or 135161359 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

The square root of 540645428 is about 23251.7833294567. The cubic root of 540645428 is about 814.6495930514.

The spelling of 540645428 in words is "five hundred forty million, six hundred forty-five thousand, four hundred twenty-eight".