205044220 has 24 divisors (see below), whose sum is σ = 433241424. Its totient is φ = 81513216.

The previous prime is 205044197. The next prime is 205044233. The reversal of 205044220 is 22440502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28189 + ... + 34708.

It is an arithmetic number, because the mean of its divisors is an integer number (18051726).

Almost surely, 2^205044220 is an apocalyptic number.

205044220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205044220 is an abundant number, since it is smaller than the sum of its proper divisors (228197204).

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

205044220 is a wasteful number, since it uses less digits than its factorization.

205044220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63069 (or 63067 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 205044220 is about 14319.3652093939. The cubic root of 205044220 is about 589.6792472769.

Adding to 205044220 its reverse (22440502), we get a palindrome (227484722).

The spelling of 205044220 in words is "two hundred five million, forty-four thousand, two hundred twenty".