32991132 has 24 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 10934896.

The previous prime is 32991103. The next prime is 32991137. The reversal of 32991132 is 23119923.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 32991132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32991137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5532 + ... + 9827.

It is an arithmetic number, because the mean of its divisors is an integer number (3225600).

Almost surely, 2^32991132 is an apocalyptic number.

It is an amenable number.

32991132 is an abundant number, since it is smaller than the sum of its proper divisors (44423268).

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

32991132 is a wasteful number, since it uses less digits than its factorization.

32991132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15545 (or 15543 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 32991132 is about 5743.7907343496. The cubic root of 32991132 is about 320.7246986938.

The spelling of 32991132 in words is "thirty-two million, nine hundred ninety-one thousand, one hundred thirty-two".