28134128 has 20 divisors (see below), whose sum is σ = 59465688. Its totient is φ = 12788160.

The previous prime is 28134121. The next prime is 28134137. The reversal of 28134128 is 82143182.

It is a self number, because there is not a number n which added to its sum of digits gives 28134128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134121) 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, 79751 + ... + 80102.

Almost surely, 2^28134128 is an apocalyptic number.

It is an amenable number.

28134128 is an abundant number, since it is smaller than the sum of its proper divisors (31331560).

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

28134128 is a wasteful number, since it uses less digits than its factorization.

28134128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159872 (or 159866 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 28134128 is about 5304.1613851767. The cubic root of 28134128 is about 304.1429959770.

The spelling of 28134128 in words is "twenty-eight million, one hundred thirty-four thousand, one hundred twenty-eight".