28560730 has 16 divisors (see below), whose sum is σ = 56083104. Its totient is φ = 10385680.

The previous prime is 28560713. The next prime is 28560773. The reversal of 28560730 is 3706582.

It is a junction number, because it is equal to n+sod(n) for n = 28560692 and 28560701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129712 + ... + 129931.

It is an arithmetic number, because the mean of its divisors is an integer number (3505194).

Almost surely, 2^28560730 is an apocalyptic number.

28560730 is a deficient number, since it is larger than the sum of its proper divisors (27522374).

28560730 is a wasteful number, since it uses less digits than its factorization.

28560730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259661.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 28560730 is about 5344.2239848270. The cubic root of 28560730 is about 305.6725461775.

The spelling of 28560730 in words is "twenty-eight million, five hundred sixty thousand, seven hundred thirty".