28167875 has 8 divisors (see below), whose sum is σ = 35153664. Its totient is φ = 22534200.

The previous prime is 28167869. The next prime is 28167907. The reversal of 28167875 is 57876182.

It is not a de Polignac number, because 28167875 - 2¹⁰ = 28166851 is a prime.

It is a Duffinian number.

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, 112547 + ... + 112796.

It is an arithmetic number, because the mean of its divisors is an integer number (4394208).

Almost surely, 2^28167875 is an apocalyptic number.

28167875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28167875 is a deficient number, since it is larger than the sum of its proper divisors (6985789).

28167875 is an equidigital number, since it uses as much as digits as its factorization.

28167875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225358 (or 225348 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 28167875 is about 5307.3416132750. The cubic root of 28167875 is about 304.2645543035.

The spelling of 28167875 in words is "twenty-eight million, one hundred sixty-seven thousand, eight hundred seventy-five".