205330215 has 16 divisors (see below), whose sum is σ = 334728288. Its totient is φ = 107442816.

The previous prime is 205330193. The next prime is 205330231. The reversal of 205330215 is 512033502.

It is not a de Polignac number, because 205330215 - 2¹⁰ = 205329191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205330191 and 205330200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128344 + ... + 129933.

It is an arithmetic number, because the mean of its divisors is an integer number (20920518).

Almost surely, 2^205330215 is an apocalyptic number.

205330215 is a deficient number, since it is larger than the sum of its proper divisors (129398073).

205330215 is a wasteful number, since it uses less digits than its factorization.

205330215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258338.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 205330215 is about 14329.3480312260. The cubic root of 205330215 is about 589.9532807974.

Adding to 205330215 its reverse (512033502), we get a palindrome (717363717).

The spelling of 205330215 in words is "two hundred five million, three hundred thirty thousand, two hundred fifteen".