204243444 has 36 divisors (see below), whose sum is σ = 535406144. Its totient is φ = 68080824.

The previous prime is 204243443. The next prime is 204243449. The reversal of 204243444 is 444342402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×204243444² = 83430768833962272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204243443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104092 + ... + 106035.

Almost surely, 2^204243444 is an apocalyptic number.

It is an amenable number.

204243444 is an abundant number, since it is smaller than the sum of its proper divisors (331162700).

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

204243444 is a wasteful number, since it uses less digits than its factorization.

204243444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210146 (or 210132 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 204243444 is about 14291.3765607096. The cubic root of 204243444 is about 588.9106048925.

Adding to 204243444 its reverse (444342402), we get a palindrome (648585846).

The spelling of 204243444 in words is "two hundred four million, two hundred forty-three thousand, four hundred forty-four".