204224405 has 54 divisors (see below), whose sum is σ = 317173878. Its totient is φ = 125774880.

The previous prime is 204224399. The next prime is 204224411. The reversal of 204224405 is 504422402.

204224405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204224399) and next prime (204224411).

It can be written as a sum of positive squares in only one way, i.e., 163379524 + 40844881 = 12782^2 + 6391^2 .

It is not a de Polignac number, because 204224405 - 2⁴ = 204224389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2460494 + ... + 2460576.

Almost surely, 2^204224405 is an apocalyptic number.

It is an amenable number.

204224405 is a deficient number, since it is larger than the sum of its proper divisors (112949473).

204224405 is an equidigital number, since it uses as much as digits as its factorization.

204224405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 204224405 is about 14290.7104442012. The cubic root of 204224405 is about 588.8923054599.

Adding to 204224405 its reverse (504422402), we get a palindrome (708646807).

The spelling of 204224405 in words is "two hundred four million, two hundred twenty-four thousand, four hundred five".