205004216 has 8 divisors (see below), whose sum is σ = 384382920. Its totient is φ = 102502104.

The previous prime is 205004213. The next prime is 205004227. The reversal of 205004216 is 612400502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205004213) 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 as a sum of consecutive naturals, namely, 12812756 + ... + 12812771.

It is an arithmetic number, because the mean of its divisors is an integer number (48047865).

Almost surely, 2^205004216 is an apocalyptic number.

It is an amenable number.

205004216 is a deficient number, since it is larger than the sum of its proper divisors (179378704).

205004216 is a wasteful number, since it uses less digits than its factorization.

205004216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25625533 (or 25625529 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 205004216 is about 14317.9682916257. The cubic root of 205004216 is about 589.6408960977.

Adding to 205004216 its reverse (612400502), we get a palindrome (817404718).

The spelling of 205004216 in words is "two hundred five million, four thousand, two hundred sixteen".