205320424 has 32 divisors (see below), whose sum is σ = 408774600. Its totient is φ = 96348160.

The previous prime is 205320397. The next prime is 205320431. The reversal of 205320424 is 424023502.

205320424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 185232100 + 20088324 = 13610^2 + 4482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 205320395 and 205320404.

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, 50964 + ... + 54844.

Almost surely, 2^205320424 is an apocalyptic number.

It is an amenable number.

205320424 is a deficient number, since it is larger than the sum of its proper divisors (203454176).

205320424 is a wasteful number, since it uses less digits than its factorization.

205320424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293 (or 4289 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 205320424 is about 14329.0063856501. The cubic root of 205320424 is about 589.9439035050.

Adding to 205320424 its reverse (424023502), we get a palindrome (629343926).

The spelling of 205320424 in words is "two hundred five million, three hundred twenty thousand, four hundred twenty-four".