243728804 has 24 divisors (see below), whose sum is σ = 465696000. Its totient is φ = 110691680.

The previous prime is 243728803. The next prime is 243728809. The reversal of 243728804 is 408827342.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (243728803) 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 7 ways as a sum of consecutive naturals, for example, 100397 + ... + 102795.

It is an arithmetic number, because the mean of its divisors is an integer number (19404000).

Almost surely, 2^243728804 is an apocalyptic number.

It is an amenable number.

243728804 is a deficient number, since it is larger than the sum of its proper divisors (221967196).

243728804 is a wasteful number, since it uses less digits than its factorization.

243728804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723 (or 4721 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 243728804 is about 15611.8161659686. The cubic root of 243728804 is about 624.6483816337.

The spelling of 243728804 in words is "two hundred forty-three million, seven hundred twenty-eight thousand, eight hundred four".