205997072 has 20 divisors (see below), whose sum is σ = 400242240. Its totient is φ = 102708768.

The previous prime is 205997059. The next prime is 205997081. The reversal of 205997072 is 270799502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12188 + ... + 23675.

It is an arithmetic number, because the mean of its divisors is an integer number (20012112).

Almost surely, 2^205997072 is an apocalyptic number.

It is an amenable number.

205997072 is a deficient number, since it is larger than the sum of its proper divisors (194245168).

205997072 is a wasteful number, since it uses less digits than its factorization.

205997072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36230 (or 36224 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 205997072 is about 14352.5980923316. The cubic root of 205997072 is about 590.5912601948.

The spelling of 205997072 in words is "two hundred five million, nine hundred ninety-seven thousand, seventy-two".