205440412 has 12 divisors (see below), whose sum is σ = 367881976. Its totient is φ = 100331280.

The previous prime is 205440397. The next prime is 205440413. The reversal of 205440412 is 214044502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205440413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597039 + ... + 597382.

Almost surely, 2^205440412 is an apocalyptic number.

It is an amenable number.

205440412 is a deficient number, since it is larger than the sum of its proper divisors (162441564).

205440412 is a wasteful number, since it uses less digits than its factorization.

205440412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194468 (or 1194466 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 205440412 is about 14333.1926659764. The cubic root of 205440412 is about 590.0588009958.

Adding to 205440412 its reverse (214044502), we get a palindrome (419484914).

The spelling of 205440412 in words is "two hundred five million, four hundred forty thousand, four hundred twelve".