91980532 has 12 divisors (see below), whose sum is σ = 183961120. Its totient is φ = 39420216.

The previous prime is 91980529. The next prime is 91980563. The reversal of 91980532 is 23508919.

91980532 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 91980491 and 91980500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642482 + ... + 1642537.

Almost surely, 2^91980532 is an apocalyptic number.

It is an amenable number.

91980532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91980532 is a wasteful number, since it uses less digits than its factorization.

91980532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285030 (or 3285028 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 91980532 is about 9590.6481532793. The cubic root of 91980532 is about 451.4038987248.

The spelling of 91980532 in words is "ninety-one million, nine hundred eighty thousand, five hundred thirty-two".