205513304 has 8 divisors (see below), whose sum is σ = 385337460. Its totient is φ = 102756648.

The previous prime is 205513283. The next prime is 205513309. The reversal of 205513304 is 403315502.

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

It is a self number, because there is not a number n which added to its sum of digits gives 205513304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205513309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12844574 + ... + 12844589.

Almost surely, 2^205513304 is an apocalyptic number.

It is an amenable number.

205513304 is a deficient number, since it is larger than the sum of its proper divisors (179824156).

205513304 is a wasteful number, since it uses less digits than its factorization.

205513304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25689169 (or 25689165 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 205513304 is about 14335.7352096082. The cubic root of 205513304 is about 590.1285786990.

Adding to 205513304 its reverse (403315502), we get a palindrome (608828806).

The spelling of 205513304 in words is "two hundred five million, five hundred thirteen thousand, three hundred four".