28667115 has 20 divisors (see below), whose sum is σ = 51389184. Its totient is φ = 15288912.

The previous prime is 28667087. The next prime is 28667129. The reversal of 28667115 is 51176682.

It is not a de Polignac number, because 28667115 - 2⁷ = 28666987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28667115.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34987 + ... + 35796.

Almost surely, 2^28667115 is an apocalyptic number.

28667115 is a deficient number, since it is larger than the sum of its proper divisors (22722069).

28667115 is an equidigital number, since it uses as much as digits as its factorization.

28667115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70800 (or 70791 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 28667115 is about 5354.1680025939. The cubic root of 28667115 is about 306.0516060598.

It can be divided in two parts, 28667 and 115, that added together give a palindrome (28782).

The spelling of 28667115 in words is "twenty-eight million, six hundred sixty-seven thousand, one hundred fifteen".