243328380 has 48 divisors (see below), whose sum is σ = 688359840. Its totient is φ = 64217088.

The previous prime is 243328373. The next prime is 243328387. The reversal of 243328380 is 83823342.

243328380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243328373) and next prime (243328387).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243328387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15085 + ... + 26724.

It is an arithmetic number, because the mean of its divisors is an integer number (14340830).

Almost surely, 2^243328380 is an apocalyptic number.

243328380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243328380 is an abundant number, since it is smaller than the sum of its proper divisors (445031460).

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

243328380 is a wasteful number, since it uses less digits than its factorization.

243328380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41918 (or 41916 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 243328380 is about 15598.9865055394. The cubic root of 243328380 is about 624.3061141877.

The spelling of 243328380 in words is "two hundred forty-three million, three hundred twenty-eight thousand, three hundred eighty".