91580982 has 16 divisors (see below), whose sum is σ = 185671920. Its totient is φ = 30108672.

The previous prime is 91580939. The next prime is 91580999. The reversal of 91580982 is 28908519.

It is a happy number.

It is a congruent number.

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, 104107 + ... + 104982.

It is an arithmetic number, because the mean of its divisors is an integer number (11604495).

Almost surely, 2^91580982 is an apocalyptic number.

91580982 is an abundant number, since it is smaller than the sum of its proper divisors (94090938).

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

91580982 is a wasteful number, since it uses less digits than its factorization.

91580982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209167.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 91580982 is about 9569.7952956163. The cubic root of 91580982 is about 450.7493391635.

The spelling of 91580982 in words is "ninety-one million, five hundred eighty thousand, nine hundred eighty-two".