205984312 has 16 divisors (see below), whose sum is σ = 392553000. Its totient is φ = 101303520.

The previous prime is 205984307. The next prime is 205984321. The reversal of 205984312 is 213489502.

It is a super-2 number, since 2×205984312² = 84859073580226688, which contains 22 as substring.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 210562 + ... + 211537.

Almost surely, 2^205984312 is an apocalyptic number.

It is an amenable number.

205984312 is a deficient number, since it is larger than the sum of its proper divisors (186568688).

205984312 is a wasteful number, since it uses less digits than its factorization.

205984312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422166 (or 422162 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 205984312 is about 14352.1535666255. The cubic root of 205984312 is about 590.5790656848.

The spelling of 205984312 in words is "two hundred five million, nine hundred eighty-four thousand, three hundred twelve".