28184275 has 12 divisors (see below), whose sum is σ = 39941392. Its totient is φ = 19326240.

The previous prime is 28184263. The next prime is 28184281. The reversal of 28184275 is 57248182.

It is not a de Polignac number, because 28184275 - 2⁵ = 28184243 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80352 + ... + 80701.

Almost surely, 2^28184275 is an apocalyptic number.

28184275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28184275 is a deficient number, since it is larger than the sum of its proper divisors (11757117).

28184275 is a wasteful number, since it uses less digits than its factorization.

28184275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161070 (or 161065 counting only the distinct ones).

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

The square root of 28184275 is about 5308.8864180730. The cubic root of 28184275 is about 304.3235928428.

The spelling of 28184275 in words is "twenty-eight million, one hundred eighty-four thousand, two hundred seventy-five".