205017272 has 16 divisors (see below), whose sum is σ = 384618240. Its totient is φ = 102452416.

The previous prime is 205017251. The next prime is 205017287. The reversal of 205017272 is 272710502.

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, 11273 + ... + 23175.

It is an arithmetic number, because the mean of its divisors is an integer number (24038640).

Almost surely, 2^205017272 is an apocalyptic number.

It is an amenable number.

205017272 is a deficient number, since it is larger than the sum of its proper divisors (179600968).

205017272 is a wasteful number, since it uses less digits than its factorization.

205017272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14062 (or 14058 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 205017272 is about 14318.4242149756. The cubic root of 205017272 is about 589.6534132194.

Adding to 205017272 its reverse (272710502), we get a palindrome (477727774).

The spelling of 205017272 in words is "two hundred five million, seventeen thousand, two hundred seventy-two".