243204222 has 8 divisors (see below), whose sum is σ = 486408456. Its totient is φ = 81068072.

The previous prime is 243204217. The next prime is 243204223. The reversal of 243204222 is 222402342.

It is a sphenic number, since it is the product of 3 distinct primes.

243204222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243204223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20267013 + ... + 20267024.

It is an arithmetic number, because the mean of its divisors is an integer number (60801057).

Almost surely, 2^243204222 is an apocalyptic number.

243204222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243204222 is a wasteful number, since it uses less digits than its factorization.

243204222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40534042.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 243204222 is about 15595.0063161257. The cubic root of 243204222 is about 624.1999123192.

Adding to 243204222 its reverse (222402342), we get a palindrome (465606564).

It can be divided in two parts, 24 and 3204222, that added together give a triangular number (3204246 = T₂₅₃₁).

The spelling of 243204222 in words is "two hundred forty-three million, two hundred four thousand, two hundred twenty-two".