89128746 has 72 divisors (see below), whose sum is σ = 226568160. Its totient is φ = 25247376.

The previous prime is 89128709. The next prime is 89128757. The reversal of 89128746 is 64782198.

89128746 = T₈₅ + T₈₆ + ... + T₈₁₁.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 122235 + ... + 122961.

It is an arithmetic number, because the mean of its divisors is an integer number (3146780).

Almost surely, 2^89128746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89128746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113284080).

89128746 is an abundant number, since it is smaller than the sum of its proper divisors (137439414).

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

89128746 is a wasteful number, since it uses less digits than its factorization.

89128746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 878 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 89128746 is about 9440.8021904921. The cubic root of 89128746 is about 446.6896934987.

The spelling of 89128746 in words is "eighty-nine million, one hundred twenty-eight thousand, seven hundred forty-six".