205040244 has 24 divisors (see below), whose sum is σ = 478947168. Its totient is φ = 68272480.

The previous prime is 205040243. The next prime is 205040279. The reversal of 205040244 is 442040502.

It is a self number, because there is not a number n which added to its sum of digits gives 205040244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205040243) 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 7 ways as a sum of consecutive naturals, for example, 2854 + ... + 20450.

It is an arithmetic number, because the mean of its divisors is an integer number (19956132).

Almost surely, 2^205040244 is an apocalyptic number.

It is an amenable number.

205040244 is an abundant number, since it is smaller than the sum of its proper divisors (273906924).

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

205040244 is a wasteful number, since it uses less digits than its factorization.

205040244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18575 (or 18573 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 205040244 is about 14319.2263757509. The cubic root of 205040244 is about 589.6754357742.

Adding to 205040244 its reverse (442040502), we get a palindrome (647080746).

The spelling of 205040244 in words is "two hundred five million, forty thousand, two hundred forty-four".