91318032 has 60 divisors (see below), whose sum is σ = 275228044. Its totient is φ = 28097280.

The previous prime is 91318001. The next prime is 91318043. The reversal of 91318032 is 23081319.

It can be written as a sum of positive squares in 2 ways, for example, as 7485696 + 83832336 = 2736^2 + 9156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91317987 and 91318005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22519 + ... + 26262.

Almost surely, 2^91318032 is an apocalyptic number.

It is an amenable number.

91318032 is an abundant number, since it is smaller than the sum of its proper divisors (183910012).

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

91318032 is a wasteful number, since it uses less digits than its factorization.

91318032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48808 (or 48799 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 91318032 is about 9556.0468814254. The cubic root of 91318032 is about 450.3175240476.

The spelling of 91318032 in words is "ninety-one million, three hundred eighteen thousand, thirty-two".