91191296 has 48 divisors (see below), whose sum is σ = 208419120. Its totient is φ = 39075840.

The previous prime is 91191293. The next prime is 91191301. The reversal of 91191296 is 69219119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91191293) 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, 11156 + ... + 17516.

It is an arithmetic number, because the mean of its divisors is an integer number (4342065).

Almost surely, 2^91191296 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 91191296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104209560).

91191296 is an abundant number, since it is smaller than the sum of its proper divisors (117227824).

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

91191296 is an equidigital number, since it uses as much as digits as its factorization.

91191296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6390 (or 6370 counting only the distinct ones).

The product of its digits is 8748, while the sum is 38.

The square root of 91191296 is about 9549.4133851248. The cubic root of 91191296 is about 450.1091027639.

The spelling of 91191296 in words is "ninety-one million, one hundred ninety-one thousand, two hundred ninety-six".