89815782 has 64 divisors (see below), whose sum is σ = 216437760. Its totient is φ = 24292224.

The previous prime is 89815763. The next prime is 89815783. The reversal of 89815782 is 28751898.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89815783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104868 + ... + 105720.

It is an arithmetic number, because the mean of its divisors is an integer number (3381840).

Almost surely, 2^89815782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89815782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108218880).

89815782 is an abundant number, since it is smaller than the sum of its proper divisors (126621978).

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

89815782 is a wasteful number, since it uses less digits than its factorization.

89815782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its digits is 322560, while the sum is 48.

The square root of 89815782 is about 9477.1188659845. The cubic root of 89815782 is about 447.8345045341.

The spelling of 89815782 in words is "eighty-nine million, eight hundred fifteen thousand, seven hundred eighty-two".