28668088 has 16 divisors (see below), whose sum is σ = 53820000. Its totient is φ = 14316096.

The previous prime is 28668083. The next prime is 28668113. The reversal of 28668088 is 88086682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28668083) 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 3 ways as a sum of consecutive naturals, for example, 6588 + ... + 10036.

It is an arithmetic number, because the mean of its divisors is an integer number (3363750).

Almost surely, 2^28668088 is an apocalyptic number.

It is an amenable number.

28668088 is a deficient number, since it is larger than the sum of its proper divisors (25151912).

28668088 is a wasteful number, since it uses less digits than its factorization.

28668088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494 (or 4490 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 28668088 is about 5354.2588656134. The cubic root of 28668088 is about 306.0550686202.

The spelling of 28668088 in words is "twenty-eight million, six hundred sixty-eight thousand, eighty-eight".