28089084 has 12 divisors (see below), whose sum is σ = 65541224. Its totient is φ = 9363024.

The previous prime is 28089077. The next prime is 28089101. The reversal of 28089084 is 48098082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 1170367 + ... + 1170390.

Almost surely, 2^28089084 is an apocalyptic number.

It is an amenable number.

28089084 is an abundant number, since it is smaller than the sum of its proper divisors (37452140).

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

28089084 is a wasteful number, since it uses less digits than its factorization.

28089084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340764 (or 2340762 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28089084 is about 5299.9135842012. The cubic root of 28089084 is about 303.9805937520.

The spelling of 28089084 in words is "twenty-eight million, eighty-nine thousand, eighty-four".