91680324 has 24 divisors (see below), whose sum is σ = 216326880. Its totient is φ = 30216384.

The previous prime is 91680317. The next prime is 91680341. The reversal of 91680324 is 42308619.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41854 + ... + 43989.

It is an arithmetic number, because the mean of its divisors is an integer number (9013620).

Almost surely, 2^91680324 is an apocalyptic number.

It is an amenable number.

91680324 is an abundant number, since it is smaller than the sum of its proper divisors (124646556).

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

91680324 is a wasteful number, since it uses less digits than its factorization.

91680324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85939 (or 85937 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 91680324 is about 9574.9842819714. The cubic root of 91680324 is about 450.9122629446.

The spelling of 91680324 in words is "ninety-one million, six hundred eighty thousand, three hundred twenty-four".