205213206 has 32 divisors (see below), whose sum is σ = 450979200. Its totient is φ = 61735680.

The previous prime is 205213201. The next prime is 205213219. The reversal of 205213206 is 602312502.

205213206 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205213206² = 84224919833596872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205213201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2011 + ... + 20358.

It is an arithmetic number, because the mean of its divisors is an integer number (14093100).

Almost surely, 2^205213206 is an apocalyptic number.

205213206 is an abundant number, since it is smaller than the sum of its proper divisors (245765994).

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

205213206 is a wasteful number, since it uses less digits than its factorization.

205213206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22524.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 205213206 is about 14325.2646048860. The cubic root of 205213206 is about 589.8411963680.

Adding to 205213206 its reverse (602312502), we get a palindrome (807525708).

The spelling of 205213206 in words is "two hundred five million, two hundred thirteen thousand, two hundred six".