91506912 has 120 divisors (see below), whose sum is σ = 280929096. Its totient is φ = 26078976.

The previous prime is 91506911. The next prime is 91506923. The reversal of 91506912 is 21960519.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91506911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 230298 + ... + 230694.

Almost surely, 2^91506912 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 91506912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140464548).

91506912 is an abundant number, since it is smaller than the sum of its proper divisors (189422184).

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

91506912 is an equidigital number, since it uses as much as digits as its factorization.

91506912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 91506912 is about 9565.9245240593. The cubic root of 91506912 is about 450.6277855108.

The spelling of 91506912 in words is "ninety-one million, five hundred six thousand, nine hundred twelve".