28798128 has 60 divisors (see below), whose sum is σ = 81041688. Its totient is φ = 9546240.

The previous prime is 28798111. The next prime is 28798151. The reversal of 28798128 is 82189782.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32248 + ... + 33128.

Almost surely, 2^28798128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28798128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40520844).

28798128 is an abundant number, since it is smaller than the sum of its proper divisors (52243560).

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

28798128 is a wasteful number, since it uses less digits than its factorization.

28798128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1113 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 28798128 is about 5366.3887298629. The cubic root of 28798128 is about 306.5171314651.

The spelling of 28798128 in words is "twenty-eight million, seven hundred ninety-eight thousand, one hundred twenty-eight".