28665099 has 6 divisors (see below), whose sum is σ = 41405156. Its totient is φ = 19110060.

The previous prime is 28665041. The next prime is 28665101. The reversal of 28665099 is 99056682.

It is not a de Polignac number, because 28665099 - 2⁸ = 28664843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28665019) 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 5 ways as a sum of consecutive naturals, for example, 1592497 + ... + 1592514.

Almost surely, 2^28665099 is an apocalyptic number.

28665099 is a deficient number, since it is larger than the sum of its proper divisors (12740057).

28665099 is a wasteful number, since it uses less digits than its factorization.

28665099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185017 (or 3185014 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 28665099 is about 5353.9797347394. The cubic root of 28665099 is about 306.0444315848.

The spelling of 28665099 in words is "twenty-eight million, six hundred sixty-five thousand, ninety-nine".