204223444 has 12 divisors (see below), whose sum is σ = 358312500. Its totient is φ = 101848448.

The previous prime is 204223433. The next prime is 204223447. The reversal of 204223444 is 444322402.

It can be written as a sum of positive squares in 2 ways, for example, as 70358544 + 133864900 = 8388^2 + 11570^2 .

It is a super-2 number, since 2×204223444² = 83414430158442272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204223447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64069 + ... + 67180.

It is an arithmetic number, because the mean of its divisors is an integer number (29859375).

Almost surely, 2^204223444 is an apocalyptic number.

It is an amenable number.

204223444 is a deficient number, since it is larger than the sum of its proper divisors (154089056).

204223444 is a wasteful number, since it uses less digits than its factorization.

204223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131642 (or 131640 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 204223444 is about 14290.6768209207. The cubic root of 204223444 is about 588.8913817597.

Adding to 204223444 its reverse (444322402), we get a palindrome (648545846).

The spelling of 204223444 in words is "two hundred four million, two hundred twenty-three thousand, four hundred forty-four".