28174887 has 12 divisors (see below), whose sum is σ = 43827784. Its totient is φ = 17338320.

The previous prime is 28174879. The next prime is 28174903. The reversal of 28174887 is 78847182.

It is not a de Polignac number, because 28174887 - 2³ = 28174879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28174807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120289 + ... + 120522.

Almost surely, 2^28174887 is an apocalyptic number.

28174887 is a deficient number, since it is larger than the sum of its proper divisors (15652897).

28174887 is a wasteful number, since it uses less digits than its factorization.

28174887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240830 (or 240827 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 28174887 is about 5308.0021665406. The cubic root of 28174887 is about 304.2897996825.

The spelling of 28174887 in words is "twenty-eight million, one hundred seventy-four thousand, eight hundred eighty-seven".