91324032 has 64 divisors (see below), whose sum is σ = 255367200. Its totient is φ = 28836864.

The previous prime is 91324031. The next prime is 91324039. The reversal of 91324032 is 23042319.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 91323993 and 91324011.

It is not an unprimeable number, because it can be changed into a prime (91324031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1038 + ... + 13554.

Almost surely, 2^91324032 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 91324032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127683600).

91324032 is an abundant number, since it is smaller than the sum of its proper divisors (164043168).

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

91324032 is a wasteful number, since it uses less digits than its factorization.

91324032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12553 (or 12541 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 91324032 is about 9556.3608136152. The cubic root of 91324032 is about 450.3273864516.

The spelling of 91324032 in words is "ninety-one million, three hundred twenty-four thousand, thirty-two".