28609088 has 28 divisors (see below), whose sum is σ = 57985152. Its totient is φ = 13998720.

The previous prime is 28609073. The next prime is 28609093. The reversal of 28609088 is 88090682.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748 + ... + 7763.

Almost surely, 2^28609088 is an apocalyptic number.

It is an amenable number.

28609088 is an abundant number, since it is smaller than the sum of its proper divisors (29376064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28609088 is an equidigital number, since it uses as much as digits as its factorization.

28609088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570 (or 9560 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 28609088 is about 5348.7463951846. The cubic root of 28609088 is about 305.8449668195.

The spelling of 28609088 in words is "twenty-eight million, six hundred nine thousand, eighty-eight".