28589427 has 12 divisors (see below), whose sum is σ = 43725240. Its totient is φ = 17938368.

The previous prime is 28589417. The next prime is 28589441. The reversal of 28589427 is 72498582.

28589427 is a `hidden beast` number, since 28 + 589 + 42 + 7 = 666.

It is not a de Polignac number, because 28589427 - 2⁴ = 28589411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28589417) 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, 93277 + ... + 93582.

It is an arithmetic number, because the mean of its divisors is an integer number (3643770).

Almost surely, 2^28589427 is an apocalyptic number.

28589427 is a deficient number, since it is larger than the sum of its proper divisors (15135813).

28589427 is a wasteful number, since it uses less digits than its factorization.

28589427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186882 (or 186879 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 28589427 is about 5346.9081720187. The cubic root of 28589427 is about 305.7748889022.

The spelling of 28589427 in words is "twenty-eight million, five hundred eighty-nine thousand, four hundred twenty-seven".