28560578 has 16 divisors (see below), whose sum is σ = 45815544. Its totient is φ = 13305600.

The previous prime is 28560551. The next prime is 28560589. The reversal of 28560578 is 87506582.

It can be written as a sum of positive squares in 4 ways, for example, as 24730729 + 3829849 = 4973^2 + 1957^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725 + ... + 7592.

Almost surely, 2^28560578 is an apocalyptic number.

28560578 is a deficient number, since it is larger than the sum of its proper divisors (17254966).

28560578 is a wasteful number, since it uses less digits than its factorization.

28560578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8437.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 28560578 is about 5344.2097638472. The cubic root of 28560578 is about 305.6720039142.

The spelling of 28560578 in words is "twenty-eight million, five hundred sixty thousand, five hundred seventy-eight".