204642222 has 32 divisors (see below), whose sum is σ = 430479360. Its totient is φ = 64764960.

The previous prime is 204642211. The next prime is 204642223. The reversal of 204642222 is 222246402.

It is a junction number, because it is equal to n+sod(n) for n = 204642192 and 204642201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204642223) 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, 522 + ... + 20237.

It is an arithmetic number, because the mean of its divisors is an integer number (13452480).

Almost surely, 2^204642222 is an apocalyptic number.

204642222 is an abundant number, since it is smaller than the sum of its proper divisors (225837138).

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

204642222 is a wasteful number, since it uses less digits than its factorization.

204642222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20848.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 204642222 is about 14305.3214574158. The cubic root of 204642222 is about 589.2936313311.

Adding to 204642222 its reverse (222246402), we get a palindrome (426888624).

The spelling of 204642222 in words is "two hundred four million, six hundred forty-two thousand, two hundred twenty-two".