28885136 has 20 divisors (see below), whose sum is σ = 63960192. Its totient is φ = 12379296.

The previous prime is 28885133. The next prime is 28885141. The reversal of 28885136 is 63158882.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28885093 and 28885102.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128840 + ... + 129063.

Almost surely, 2^28885136 is an apocalyptic number.

It is an amenable number.

28885136 is an abundant number, since it is smaller than the sum of its proper divisors (35075056).

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

28885136 is a wasteful number, since it uses less digits than its factorization.

28885136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257918 (or 257912 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 28885136 is about 5374.4893710938. The cubic root of 28885136 is about 306.8255152682.

The spelling of 28885136 in words is "twenty-eight million, eight hundred eighty-five thousand, one hundred thirty-six".