89091128 has 16 divisors (see below), whose sum is σ = 190909680. Its totient is φ = 38181888.

The previous prime is 89091127. The next prime is 89091131. The reversal of 89091128 is 82119098.

It is a junction number, because it is equal to n+sod(n) for n = 89091091 and 89091100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89091127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795401 + ... + 795512.

It is an arithmetic number, because the mean of its divisors is an integer number (11931855).

Almost surely, 2^89091128 is an apocalyptic number.

It is an amenable number.

89091128 is an abundant number, since it is smaller than the sum of its proper divisors (101818552).

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

89091128 is a wasteful number, since it uses less digits than its factorization.

89091128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590926 (or 1590922 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 89091128 is about 9438.8096707159. The cubic root of 89091128 is about 446.6268408342.

The spelling of 89091128 in words is "eighty-nine million, ninety-one thousand, one hundred twenty-eight".