28185327 has 42 divisors (see below), whose sum is σ = 45197736. Its totient is φ = 17534880.

The previous prime is 28185319. The next prime is 28185331. The reversal of 28185327 is 72358182.

It is not a de Polignac number, because 28185327 - 2³ = 28185319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28185291 and 28185300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28185317) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 687427 + ... + 687467.

Almost surely, 2^28185327 is an apocalyptic number.

28185327 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28185327 is a deficient number, since it is larger than the sum of its proper divisors (17012409).

28185327 is an frugal number, since it uses more digits than its factorization.

28185327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 67 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 28185327 is about 5308.9854963072. The cubic root of 28185327 is about 304.3273791673.

The spelling of 28185327 in words is "twenty-eight million, one hundred eighty-five thousand, three hundred twenty-seven".