243788132 has 72 divisors (see below), whose sum is σ = 530893440. Its totient is φ = 97426560.

The previous prime is 243788119. The next prime is 243788161. The reversal of 243788132 is 231887342.

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, 184169 + ... + 185487.

It is an arithmetic number, because the mean of its divisors is an integer number (7373520).

Almost surely, 2^243788132 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 243788132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265446720).

243788132 is an abundant number, since it is smaller than the sum of its proper divisors (287105308).

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

243788132 is a wasteful number, since it uses less digits than its factorization.

243788132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1392 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 243788132 is about 15613.7161495910. The cubic root of 243788132 is about 624.6990610938.

The spelling of 243788132 in words is "two hundred forty-three million, seven hundred eighty-eight thousand, one hundred thirty-two".