91796144 has 80 divisors (see below), whose sum is σ = 207070080. Its totient is φ = 38983680.

The previous prime is 91796129. The next prime is 91796167. The reversal of 91796144 is 44169719.

It is an unprimeable number.

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, 324227 + ... + 324509.

It is an arithmetic number, because the mean of its divisors is an integer number (2588376).

Almost surely, 2^91796144 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 91796144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103535040).

91796144 is an abundant number, since it is smaller than the sum of its proper divisors (115273936).

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

91796144 is a wasteful number, since it uses less digits than its factorization.

91796144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 412 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 91796144 is about 9581.0304247508. The cubic root of 91796144 is about 451.1020626005.

The spelling of 91796144 in words is "ninety-one million, seven hundred ninety-six thousand, one hundred forty-four".