243327640 has 16 divisors (see below), whose sum is σ = 547487280. Its totient is φ = 97331040.

The previous prime is 243327631. The next prime is 243327641. The reversal of 243327640 is 46723342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243327641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3041556 + ... + 3041635.

It is an arithmetic number, because the mean of its divisors is an integer number (34217955).

Almost surely, 2^243327640 is an apocalyptic number.

243327640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243327640 is an abundant number, since it is smaller than the sum of its proper divisors (304159640).

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

243327640 is a wasteful number, since it uses less digits than its factorization.

243327640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6083202 (or 6083198 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 243327640 is about 15598.9627860316. The cubic root of 243327640 is about 624.3054813159.

The spelling of 243327640 in words is "two hundred forty-three million, three hundred twenty-seven thousand, six hundred forty".