28888812 has 42 divisors (see below), whose sum is σ = 75806108. Its totient is φ = 9628632.

The previous prime is 28888771. The next prime is 28888841. The reversal of 28888812 is 21888882.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2038 + ... + 7869.

Almost surely, 2^28888812 is an apocalyptic number.

It is an amenable number.

28888812 is an abundant number, since it is smaller than the sum of its proper divisors (46917296).

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

28888812 is an equidigital number, since it uses as much as digits as its factorization.

28888812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9929 (or 9912 counting only the distinct ones).

The product of its digits is 131072, while the sum is 45.

The square root of 28888812 is about 5374.8313461912. The cubic root of 28888812 is about 306.8385305292.

The spelling of 28888812 in words is "twenty-eight million, eight hundred eighty-eight thousand, eight hundred twelve".