28866115 has 32 divisors (see below), whose sum is σ = 37711872. Its totient is φ = 21168000.

The previous prime is 28866109. The next prime is 28866151. The reversal of 28866115 is 51166882.

It is not a de Polignac number, because 28866115 - 2⁵ = 28866083 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 406530 + ... + 406600.

It is an arithmetic number, because the mean of its divisors is an integer number (1178496).

Almost surely, 2^28866115 is an apocalyptic number.

28866115 is a deficient number, since it is larger than the sum of its proper divisors (8845757).

28866115 is a wasteful number, since it uses less digits than its factorization.

28866115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211.

The product of its digits is 23040, while the sum is 37.

The square root of 28866115 is about 5372.7195162227. The cubic root of 28866115 is about 306.7581517906.

The spelling of 28866115 in words is "twenty-eight million, eight hundred sixty-six thousand, one hundred fifteen".