91832320 has 120 divisors (see below), whose sum is σ = 235922400. Its totient is φ = 34209792.

The previous prime is 91832297. The next prime is 91832329. The reversal of 91832320 is 2323819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91832329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1556451 + ... + 1556509.

It is an arithmetic number, because the mean of its divisors is an integer number (1966020).

Almost surely, 2^91832320 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 91832320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117961200).

91832320 is an abundant number, since it is smaller than the sum of its proper divisors (144090080).

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

91832320 is an equidigital number, since it uses as much as digits as its factorization.

91832320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 91832320 is about 9582.9181359333. The cubic root of 91832320 is about 451.1613131828.

The spelling of 91832320 in words is "ninety-one million, eight hundred thirty-two thousand, three hundred twenty".