204401424 has 20 divisors (see below), whose sum is σ = 528037136. Its totient is φ = 68133792.

The previous prime is 204401419. The next prime is 204401447. The reversal of 204401424 is 424104402.

It is a self number, because there is not a number n which added to its sum of digits gives 204401424.

It is an unprimeable number.

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, 2129134 + ... + 2129229.

Almost surely, 2^204401424 is an apocalyptic number.

204401424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204401424 is an abundant number, since it is smaller than the sum of its proper divisors (323635712).

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

204401424 is a wasteful number, since it uses less digits than its factorization.

204401424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258374 (or 4258368 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 204401424 is about 14296.9026016127. The cubic root of 204401424 is about 589.0624043308.

Adding to 204401424 its reverse (424104402), we get a palindrome (628505826).

The spelling of 204401424 in words is "two hundred four million, four hundred one thousand, four hundred twenty-four".