205345210 has 64 divisors (see below), whose sum is σ = 457788672. Its totient is φ = 64705536.

The previous prime is 205345199. The next prime is 205345213. The reversal of 205345210 is 12543502.

It is not an unprimeable number, because it can be changed into a prime (205345213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49164 + ... + 53176.

It is an arithmetic number, because the mean of its divisors is an integer number (7152948).

Almost surely, 2^205345210 is an apocalyptic number.

205345210 is an abundant number, since it is smaller than the sum of its proper divisors (252443462).

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

205345210 is a wasteful number, since it uses less digits than its factorization.

205345210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 205345210 is about 14329.8712485493. The cubic root of 205345210 is about 589.9676416228.

Adding to 205345210 its reverse (12543502), we get a palindrome (217888712).

The spelling of 205345210 in words is "two hundred five million, three hundred forty-five thousand, two hundred ten".