28830312 has 48 divisors (see below), whose sum is σ = 89238240. Its totient is φ = 8237088.

The previous prime is 28830311. The next prime is 28830343. The reversal of 28830312 is 21303882.

It is not an unprimeable number, because it can be changed into a prime (28830311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28098 + ... + 29105.

It is an arithmetic number, because the mean of its divisors is an integer number (1859130).

Almost surely, 2^28830312 is an apocalyptic number.

It is an amenable number.

28830312 is an abundant number, since it is smaller than the sum of its proper divisors (60407928).

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

28830312 is a wasteful number, since it uses less digits than its factorization.

28830312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57222 (or 57215 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28830312 is about 5369.3865571404. The cubic root of 28830312 is about 306.6312740083.

The spelling of 28830312 in words is "twenty-eight million, eight hundred thirty thousand, three hundred twelve".