205222410 has 40 divisors (see below), whose sum is σ = 551822436. Its totient is φ = 54725760.

The previous prime is 205222349. The next prime is 205222411. The reversal of 205222410 is 14222502.

It can be written as a sum of positive squares in 2 ways, for example, as 195356529 + 9865881 = 13977^2 + 3141^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (205222411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 125871 + ... + 127490.

Almost surely, 2^205222410 is an apocalyptic number.

205222410 is an abundant number, since it is smaller than the sum of its proper divisors (346600026).

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

205222410 is a wasteful number, since it uses less digits than its factorization.

205222410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253380 (or 253371 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 205222410 is about 14325.5858518945. The cubic root of 205222410 is about 589.8500145419.

Adding to 205222410 its reverse (14222502), we get a palindrome (219444912).

The spelling of 205222410 in words is "two hundred five million, two hundred twenty-two thousand, four hundred ten".