89889728 has 14 divisors (see below), whose sum is σ = 178375056. Its totient is φ = 44944832.

The previous prime is 89889719. The next prime is 89889781. The reversal of 89889728 is 82798898.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702200 + ... + 702327.

Almost surely, 2^89889728 is an apocalyptic number.

It is an amenable number.

89889728 is a deficient number, since it is larger than the sum of its proper divisors (88485328).

89889728 is a wasteful number, since it uses less digits than its factorization.

89889728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404539 (or 1404529 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 59.

The square root of 89889728 is about 9481.0193544787. The cubic root of 89889728 is about 447.9573726448.

The spelling of 89889728 in words is "eighty-nine million, eight hundred eighty-nine thousand, seven hundred twenty-eight".