132991956 has 72 divisors (see below), whose sum is σ = 354498144. Its totient is φ = 43584480.

The previous prime is 132991927. The next prime is 132991967. The reversal of 132991956 is 659199231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 58171 + ... + 60413.

Almost surely, 2^132991956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 132991956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177249072).

132991956 is an abundant number, since it is smaller than the sum of its proper divisors (221506188).

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

132991956 is a wasteful number, since it uses less digits than its factorization.

132991956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2309 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 132991956 is about 11532.2138377677. The cubic root of 132991956 is about 510.4365811790.

The spelling of 132991956 in words is "one hundred thirty-two million, nine hundred ninety-one thousand, nine hundred fifty-six".