28366899 has 8 divisors (see below), whose sum is σ = 41260992. Its totient is φ = 17192040.

The previous prime is 28366883. The next prime is 28366907. The reversal of 28366899 is 99866382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28366899 - 2⁴ = 28366883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28366099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429769 + ... + 429834.

It is an arithmetic number, because the mean of its divisors is an integer number (5157624).

Almost surely, 2^28366899 is an apocalyptic number.

28366899 is a deficient number, since it is larger than the sum of its proper divisors (12894093).

28366899 is a wasteful number, since it uses less digits than its factorization.

28366899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859617.

The product of its digits is 1119744, while the sum is 51.

The square root of 28366899 is about 5326.0584863480. The cubic root of 28366899 is about 304.9794808376.

The spelling of 28366899 in words is "twenty-eight million, three hundred sixty-six thousand, eight hundred ninety-nine".