204422013 has 6 divisors (see below), whose sum is σ = 295276254. Its totient is φ = 136281336.

The previous prime is 204422011. The next prime is 204422017. The reversal of 204422013 is 310224402.

204422013 is a `hidden beast` number, since 20 + 442 + 201 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 183792249 + 20629764 = 13557^2 + 4542^2 .

It is not a de Polignac number, because 204422013 - 2¹ = 204422011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204422011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11356770 + ... + 11356787.

It is an arithmetic number, because the mean of its divisors is an integer number (49212709).

Almost surely, 2^204422013 is an apocalyptic number.

It is an amenable number.

204422013 is a deficient number, since it is larger than the sum of its proper divisors (90854241).

204422013 is a wasteful number, since it uses less digits than its factorization.

204422013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22713563 (or 22713560 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204422013 is about 14297.6226345501. The cubic root of 204422013 is about 589.0821820773.

Adding to 204422013 its reverse (310224402), we get a palindrome (514646415).

The spelling of 204422013 in words is "two hundred four million, four hundred twenty-two thousand, thirteen".