132643836 has 72 divisors (see below), whose sum is σ = 363670944. Its totient is φ = 40521600.

The previous prime is 132643813. The next prime is 132643867. The reversal of 132643836 is 638346231.

132643836 is a `hidden beast` number, since 1 + 3 + 2 + 643 + 8 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 132643836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69730 + ... + 71606.

Almost surely, 2^132643836 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 132643836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181835472).

132643836 is an abundant number, since it is smaller than the sum of its proper divisors (231027108).

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

132643836 is a wasteful number, since it uses less digits than its factorization.

132643836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051 (or 2046 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 132643836 is about 11517.1105751399. The cubic root of 132643836 is about 509.9908187505.

The spelling of 132643836 in words is "one hundred thirty-two million, six hundred forty-three thousand, eight hundred thirty-six".