89805728 has 24 divisors (see below), whose sum is σ = 179448192. Its totient is φ = 44231616.

The previous prime is 89805719. The next prime is 89805739. The reversal of 89805728 is 82750898.

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, 18800 + ... + 23087.

It is an arithmetic number, because the mean of its divisors is an integer number (7477008).

Almost surely, 2^89805728 is an apocalyptic number.

It is an amenable number.

89805728 is a deficient number, since it is larger than the sum of its proper divisors (89642464).

89805728 is a wasteful number, since it uses less digits than its factorization.

89805728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41964 (or 41956 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 89805728 is about 9476.5884156694. The cubic root of 89805728 is about 447.8177936769.

The spelling of 89805728 in words is "eighty-nine million, eight hundred five thousand, seven hundred twenty-eight".