205034306 has 4 divisors (see below), whose sum is σ = 307551462. Its totient is φ = 102517152.

The previous prime is 205034299. The next prime is 205034311. The reversal of 205034306 is 603430502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 153983281 + 51051025 = 12409^2 + 7145^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51258575 + ... + 51258578.

Almost surely, 2^205034306 is an apocalyptic number.

205034306 is a deficient number, since it is larger than the sum of its proper divisors (102517156).

205034306 is a wasteful number, since it uses less digits than its factorization.

205034306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102517155.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 205034306 is about 14319.0190306459. The cubic root of 205034306 is about 589.6697433526.

Adding to 205034306 its reverse (603430502), we get a palindrome (808464808).

The spelling of 205034306 in words is "two hundred five million, thirty-four thousand, three hundred six".