204203394 has 12 divisors (see below), whose sum is σ = 442440726. Its totient is φ = 68067792.

The previous prime is 204203357. The next prime is 204203399. The reversal of 204203394 is 493302402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 153437769 + 50765625 = 12387^2 + 7125^2 .

It is a super-2 number, since 2×204203394² = 83398052242238472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204203399) 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 5 ways as a sum of consecutive naturals, for example, 5672299 + ... + 5672334.

Almost surely, 2^204203394 is an apocalyptic number.

204203394 is an abundant number, since it is smaller than the sum of its proper divisors (238237332).

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

204203394 is a wasteful number, since it uses less digits than its factorization.

204203394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11344641 (or 11344638 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 204203394 is about 14289.9752973894. The cubic root of 204203394 is about 588.8721093092.

Adding to 204203394 its reverse (493302402), we get a palindrome (697505796).

The spelling of 204203394 in words is "two hundred four million, two hundred three thousand, three hundred ninety-four".