204740213 has 8 divisors (see below), whose sum is σ = 211944960. Its totient is φ = 197573040.

The previous prime is 204740209. The next prime is 204740233. The reversal of 204740213 is 312047402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204740213 - 2² = 204740209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204740233) 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 7 ways as a sum of consecutive naturals, for example, 1931 + ... + 20327.

It is an arithmetic number, because the mean of its divisors is an integer number (26493120).

Almost surely, 2^204740213 is an apocalyptic number.

It is an amenable number.

204740213 is a deficient number, since it is larger than the sum of its proper divisors (7204747).

204740213 is a wasteful number, since it uses less digits than its factorization.

204740213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18787.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 204740213 is about 14308.7460317108. The cubic root of 204740213 is about 589.3876755565.

Adding to 204740213 its reverse (312047402), we get a palindrome (516787615).

The spelling of 204740213 in words is "two hundred four million, seven hundred forty thousand, two hundred thirteen".