205912272 has 40 divisors (see below), whose sum is σ = 559939360. Its totient is φ = 65024640.

The previous prime is 205912243. The next prime is 205912319. The reversal of 205912272 is 272219502.

It is a congruent number.

It is an unprimeable number.

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, 111979 + ... + 113802.

It is an arithmetic number, because the mean of its divisors is an integer number (13998484).

Almost surely, 2^205912272 is an apocalyptic number.

It is an amenable number.

205912272 is an abundant number, since it is smaller than the sum of its proper divisors (354027088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205912272 is a wasteful number, since it uses less digits than its factorization.

205912272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225811 (or 225805 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 205912272 is about 14349.6436192680. The cubic root of 205912272 is about 590.5102088605.

The spelling of 205912272 in words is "two hundred five million, nine hundred twelve thousand, two hundred seventy-two".