204136164 has 36 divisors (see below), whose sum is σ = 517274940. Its totient is φ = 67878720.

The previous prime is 204136157. The next prime is 204136169. The reversal of 204136164 is 461631402.

204136164 is a `hidden beast` number, since 2 + 0 + 41 + 3 + 616 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46131264 + 158004900 = 6792^2 + 12570^2 .

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

It is not an unprimeable number, because it can be changed into a prime (204136169) 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, 8422 + ... + 21890.

Almost surely, 2^204136164 is an apocalyptic number.

It is an amenable number.

204136164 is an abundant number, since it is smaller than the sum of its proper divisors (313138776).

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

204136164 is a wasteful number, since it uses less digits than its factorization.

204136164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13900 (or 13895 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 204136164 is about 14287.6227553782. The cubic root of 204136164 is about 588.8074773155.

Adding to 204136164 its reverse (461631402), we get a palindrome (665767566).

The spelling of 204136164 in words is "two hundred four million, one hundred thirty-six thousand, one hundred sixty-four".