204400133 has 16 divisors (see below), whose sum is σ = 239700480. Its totient is φ = 170660736.

The previous prime is 204400127. The next prime is 204400139. The reversal of 204400133 is 331004402.

It is an interprime number because it is at equal distance from previous prime (204400127) and next prime (204400139).

It is a cyclic number.

It is not a de Polignac number, because 204400133 - 2⁴ = 204400117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204400139) 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 15 ways as a sum of consecutive naturals, for example, 73985 + ... + 76697.

It is an arithmetic number, because the mean of its divisors is an integer number (14981280).

Almost surely, 2^204400133 is an apocalyptic number.

It is an amenable number.

204400133 is a deficient number, since it is larger than the sum of its proper divisors (35300347).

204400133 is a wasteful number, since it uses less digits than its factorization.

204400133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 204400133 is about 14296.8574519018. The cubic root of 204400133 is about 589.0611641549.

Adding to 204400133 its reverse (331004402), we get a palindrome (535404535).

The spelling of 204400133 in words is "two hundred four million, four hundred thousand, one hundred thirty-three".