89065728 has 216 divisors, whose sum is σ = 280600320. Its totient is φ = 27095040.

The previous prime is 89065727. The next prime is 89065733. The reversal of 89065728 is 82756098.

It is not an unprimeable number, because it can be changed into a prime (89065727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2071275 + ... + 2071317.

Almost surely, 2^89065728 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 89065728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140300160).

89065728 is an abundant number, since it is smaller than the sum of its proper divisors (191534592).

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

89065728 is a wasteful number, since it uses less digits than its factorization.

89065728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 89065728 is about 9437.4640661568. The cubic root of 89065728 is about 446.5843921629.

The spelling of 89065728 in words is "eighty-nine million, sixty-five thousand, seven hundred twenty-eight".