28885134 has 16 divisors (see below), whose sum is σ = 58226688. Its totient is φ = 9552312.

The previous prime is 28885133. The next prime is 28885141. The reversal of 28885134 is 43158882.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28885092 and 28885101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18192 + ... + 19715.

It is an arithmetic number, because the mean of its divisors is an integer number (3639168).

Almost surely, 2^28885134 is an apocalyptic number.

28885134 is an abundant number, since it is smaller than the sum of its proper divisors (29341554).

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

28885134 is a wasteful number, since it uses less digits than its factorization.

28885134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38039.

The product of its digits is 61440, while the sum is 39.

The square root of 28885134 is about 5374.4891850296. The cubic root of 28885134 is about 306.8255081867.

The spelling of 28885134 in words is "twenty-eight million, eight hundred eighty-five thousand, one hundred thirty-four".