28124875 has 16 divisors (see below), whose sum is σ = 35605440. Its totient is φ = 22176000.

The previous prime is 28124861. The next prime is 28124891. The reversal of 28124875 is 57842182.

It is not a de Polignac number, because 28124875 - 2⁹ = 28124363 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7291 + ... + 10459.

It is an arithmetic number, because the mean of its divisors is an integer number (2225340).

Almost surely, 2^28124875 is an apocalyptic number.

28124875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28124875 is a deficient number, since it is larger than the sum of its proper divisors (7480565).

28124875 is an equidigital number, since it uses as much as digits as its factorization.

28124875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255 (or 3245 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 28124875 is about 5303.2890737730. The cubic root of 28124875 is about 304.1096492445.

The spelling of 28124875 in words is "twenty-eight million, one hundred twenty-four thousand, eight hundred seventy-five".