89728524 has 18 divisors (see below), whose sum is σ = 226813860. Its totient is φ = 29909496.

The previous prime is 89728519. The next prime is 89728547. The reversal of 89728524 is 42582798.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 89728524.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1246194 + ... + 1246265.

It is an arithmetic number, because the mean of its divisors is an integer number (12600770).

Almost surely, 2^89728524 is an apocalyptic number.

It is an amenable number.

89728524 is an abundant number, since it is smaller than the sum of its proper divisors (137085336).

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

89728524 is a wasteful number, since it uses less digits than its factorization.

89728524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492469 (or 2492464 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 89728524 is about 9472.5141330061. The cubic root of 89728524 is about 447.6894305322.

The spelling of 89728524 in words is "eighty-nine million, seven hundred twenty-eight thousand, five hundred twenty-four".