89724544 has 64 divisors (see below), whose sum is σ = 220026240. Its totient is φ = 35490816.

The previous prime is 89724533. The next prime is 89724553. The reversal of 89724544 is 44542798.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 89724544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7797 + ... + 15499.

It is an arithmetic number, because the mean of its divisors is an integer number (3437910).

Almost surely, 2^89724544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89724544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110013120).

89724544 is an abundant number, since it is smaller than the sum of its proper divisors (130301696).

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

89724544 is a wasteful number, since it uses less digits than its factorization.

89724544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737 (or 7725 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 89724544 is about 9472.3040491741. The cubic root of 89724544 is about 447.6828111942.

The spelling of 89724544 in words is "eighty-nine million, seven hundred twenty-four thousand, five hundred forty-four".