91236 has 12 divisors (see below), whose sum is σ = 212912. Its totient is φ = 30408.

The previous prime is 91229. The next prime is 91237. The reversal of 91236 is 63219.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (91237) by changing a digit.

91236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3790 + ... + 3813.

2⁹¹²³⁶ is an apocalyptic number.

It is an amenable number.

91236 is an abundant number, since it is smaller than the sum of its proper divisors (121676).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106456).

91236 is a wasteful number, since it uses less digits than its factorization.

91236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7610 (or 7608 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

The square root of 91236 is about 302.0529754861. The cubic root of 91236 is about 45.0182641910.

The spelling of 91236 in words is "ninety-one thousand, two hundred thirty-six".