89711928 has 64 divisors (see below), whose sum is σ = 252960000. Its totient is φ = 29452896.

The previous prime is 89711927. The next prime is 89711929. The reversal of 89711928 is 82911798.

It is an interprime number because it is at equal distance from previous prime (89711927) and next prime (89711929).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89711927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11373 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (3952500).

Almost surely, 2^89711928 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 89711928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126480000).

89711928 is an abundant number, since it is smaller than the sum of its proper divisors (163248072).

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

89711928 is a wasteful number, since it uses less digits than its factorization.

89711928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281 (or 6271 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 89711928 is about 9471.6380843020. The cubic root of 89711928 is about 447.6618275970.

The spelling of 89711928 in words is "eighty-nine million, seven hundred eleven thousand, nine hundred twenty-eight".