28667296 has 24 divisors (see below), whose sum is σ = 64501920. Its totient is φ = 12285888.

The previous prime is 28667291. The next prime is 28667297. The reversal of 28667296 is 69276682.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28667291) 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, 63766 + ... + 64213.

It is an arithmetic number, because the mean of its divisors is an integer number (2687580).

Almost surely, 2^28667296 is an apocalyptic number.

It is an amenable number.

28667296 is an abundant number, since it is smaller than the sum of its proper divisors (35834624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28667296 is a wasteful number, since it uses less digits than its factorization.

28667296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127996 (or 127988 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 28667296 is about 5354.1849052867. The cubic root of 28667296 is about 306.0522501803.

The spelling of 28667296 in words is "twenty-eight million, six hundred sixty-seven thousand, two hundred ninety-six".