243621368 has 32 divisors (see below), whose sum is σ = 464162400. Its totient is φ = 119860608.

The previous prime is 243621361. The next prime is 243621379. The reversal of 243621368 is 863126342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243621361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141698 + ... + 143406.

It is an arithmetic number, because the mean of its divisors is an integer number (14505075).

Almost surely, 2^243621368 is an apocalyptic number.

It is an amenable number.

243621368 is a deficient number, since it is larger than the sum of its proper divisors (220541032).

243621368 is a wasteful number, since it uses less digits than its factorization.

243621368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991 (or 1987 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 243621368 is about 15608.3749314270. The cubic root of 243621368 is about 624.5565861824.

The spelling of 243621368 in words is "two hundred forty-three million, six hundred twenty-one thousand, three hundred sixty-eight".