205432412 has 24 divisors (see below), whose sum is σ = 387244032. Its totient is φ = 95079600.

The previous prime is 205432411. The next prime is 205432421. The reversal of 205432412 is 214234502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205432411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33164 + ... + 38867.

It is an arithmetic number, because the mean of its divisors is an integer number (16135168).

Almost surely, 2^205432412 is an apocalyptic number.

It is an amenable number.

205432412 is a deficient number, since it is larger than the sum of its proper divisors (181811620).

205432412 is a wasteful number, since it uses less digits than its factorization.

205432412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72089 (or 72087 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 205432412 is about 14332.9135907533. The cubic root of 205432412 is about 590.0511417892.

Adding to 205432412 its reverse (214234502), we get a palindrome (419666914).

The spelling of 205432412 in words is "two hundred five million, four hundred thirty-two thousand, four hundred twelve".