28560875 has 24 divisors (see below), whose sum is σ = 41472288. Its totient is φ = 19580400.

The previous prime is 28560869. The next prime is 28560893. The reversal of 28560875 is 57806582.

It is not a de Polignac number, because 28560875 - 2⁶ = 28560811 is a prime.

It is a super-3 number, since 3×28560875³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3794 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (1728012).

Almost surely, 2^28560875 is an apocalyptic number.

28560875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28560875 is a deficient number, since it is larger than the sum of its proper divisors (12911413).

28560875 is an equidigital number, since it uses as much as digits as its factorization.

28560875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692 (or 4675 counting only the distinct ones).

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

The square root of 28560875 is about 5344.2375508579. The cubic root of 28560875 is about 305.6730634664.

The spelling of 28560875 in words is "twenty-eight million, five hundred sixty thousand, eight hundred seventy-five".