89047728 has 160 divisors (see below), whose sum is σ = 318789120. Its totient is φ = 23120640.

The previous prime is 89047687. The next prime is 89047733. The reversal of 89047728 is 82774098.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31926 + ... + 34602.

It is an arithmetic number, because the mean of its divisors is an integer number (1992432).

Almost surely, 2^89047728 is an apocalyptic number.

89047728 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89047728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159394560).

89047728 is an abundant number, since it is smaller than the sum of its proper divisors (229741392).

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

89047728 is a wasteful number, since it uses less digits than its factorization.

89047728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712 (or 2700 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 89047728 is about 9436.5103719542. The cubic root of 89047728 is about 446.5543055410.

The spelling of 89047728 in words is "eighty-nine million, forty-seven thousand, seven hundred twenty-eight".