91324233 has 128 divisors (see below), whose sum is σ = 189235200. Its totient is φ = 41990400.

The previous prime is 91324223. The next prime is 91324249. The reversal of 91324233 is 33242319.

It is a happy number.

It is not a de Polignac number, because 91324233 - 2⁸ = 91323977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 91324197 and 91324206.

It is not an unprimeable number, because it can be changed into a prime (91324223) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 837783 + ... + 837891.

It is an arithmetic number, because the mean of its divisors is an integer number (1478400).

Almost surely, 2^91324233 is an apocalyptic number.

91324233 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

91324233 is an abundant number, since it is smaller than the sum of its proper divisors (97910967).

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

91324233 is a wasteful number, since it uses less digits than its factorization.

91324233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 174 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 91324233 is about 9556.3713301650. The cubic root of 91324233 is about 450.3277168347.

The spelling of 91324233 in words is "ninety-one million, three hundred twenty-four thousand, two hundred thirty-three".