28886229 has 12 divisors (see below), whose sum is σ = 43538976. Its totient is φ = 18420072.

The previous prime is 28886227. The next prime is 28886261. The reversal of 28886229 is 92268882.

It is not a de Polignac number, because 28886229 - 2¹ = 28886227 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69567 + ... + 69980.

It is an arithmetic number, because the mean of its divisors is an integer number (3628248).

Almost surely, 2^28886229 is an apocalyptic number.

It is an amenable number.

28886229 is a deficient number, since it is larger than the sum of its proper divisors (14652747).

28886229 is a wasteful number, since it uses less digits than its factorization.

28886229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139576 (or 139573 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 28886229 is about 5374.5910542105. The cubic root of 28886229 is about 306.8293852639.

The spelling of 28886229 in words is "twenty-eight million, eight hundred eighty-six thousand, two hundred twenty-nine".