28793228 has 12 divisors (see below), whose sum is σ = 50505000. Its totient is φ = 14363232.

The previous prime is 28793213. The next prime is 28793243. The reversal of 28793228 is 82239782.

It is an interprime number because it is at equal distance from previous prime (28793213) and next prime (28793243).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6353 + ... + 9896.

It is an arithmetic number, because the mean of its divisors is an integer number (4208750).

Almost surely, 2^28793228 is an apocalyptic number.

It is an amenable number.

28793228 is a deficient number, since it is larger than the sum of its proper divisors (21711772).

28793228 is a wasteful number, since it uses less digits than its factorization.

28793228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16696 (or 16694 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 28793228 is about 5365.9321650576. The cubic root of 28793228 is about 306.4997458543.

The spelling of 28793228 in words is "twenty-eight million, seven hundred ninety-three thousand, two hundred twenty-eight".