205236473 has 6 divisors (see below), whose sum is σ = 222238494. Its totient is φ = 189448896.

The previous prime is 205236469. The next prime is 205236481. The reversal of 205236473 is 374632502.

It can be written as a sum of positive squares in 3 ways, for example, as 7327849 + 197908624 = 2707^2 + 14068^2 .

It is not a de Polignac number, because 205236473 - 2² = 205236469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205236433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607040 + ... + 607377.

It is an arithmetic number, because the mean of its divisors is an integer number (37039749).

Almost surely, 2^205236473 is an apocalyptic number.

It is an amenable number.

205236473 is a deficient number, since it is larger than the sum of its proper divisors (17002021).

205236473 is a wasteful number, since it uses less digits than its factorization.

205236473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214443 (or 1214430 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 205236473 is about 14326.0766785607. The cubic root of 205236473 is about 589.8634875203.

Adding to 205236473 its reverse (374632502), we get a palindrome (579868975).

The spelling of 205236473 in words is "two hundred five million, two hundred thirty-six thousand, four hundred seventy-three".