205440422 has 32 divisors (see below), whose sum is σ = 345830688. Its totient is φ = 90720000.

The previous prime is 205440421. The next prime is 205440449. The reversal of 205440422 is 224044502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205440421) 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, 379472 + ... + 380012.

It is an arithmetic number, because the mean of its divisors is an integer number (10807209).

Almost surely, 2^205440422 is an apocalyptic number.

205440422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205440422 is a deficient number, since it is larger than the sum of its proper divisors (140390266).

205440422 is a wasteful number, since it uses less digits than its factorization.

205440422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 205440422 is about 14333.1930148170. The cubic root of 205440422 is about 590.0588105697.

Adding to 205440422 its reverse (224044502), we get a palindrome (429484924).

The spelling of 205440422 in words is "two hundred five million, four hundred forty thousand, four hundred twenty-two".