28360875 has 16 divisors (see below), whose sum is σ = 47193120. Its totient is φ = 15125600.

The previous prime is 28360873. The next prime is 28360903. The reversal of 28360875 is 57806382.

It is not a de Polignac number, because 28360875 - 2¹ = 28360873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28360873) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 37440 + ... + 38189.

It is an arithmetic number, because the mean of its divisors is an integer number (2949570).

Almost surely, 2^28360875 is an apocalyptic number.

28360875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28360875 is a deficient number, since it is larger than the sum of its proper divisors (18832245).

28360875 is an equidigital number, since it uses as much as digits as its factorization.

28360875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75647 (or 75637 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28360875 is about 5325.4929349310. The cubic root of 28360875 is about 304.9578908093.

The spelling of 28360875 in words is "twenty-eight million, three hundred sixty thousand, eight hundred seventy-five".