205423273 has 12 divisors (see below), whose sum is σ = 229174960. Its totient is φ = 183953880.

The previous prime is 205423259. The next prime is 205423279. The reversal of 205423273 is 372324502.

It is not a de Polignac number, because 205423273 - 2¹³ = 205415081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205423279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4563 + ... + 20776.

Almost surely, 2^205423273 is an apocalyptic number.

It is an amenable number.

205423273 is a deficient number, since it is larger than the sum of its proper divisors (23751687).

205423273 is a wasteful number, since it uses less digits than its factorization.

205423273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25428 (or 25417 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 205423273 is about 14332.5947755457. The cubic root of 205423273 is about 590.0423918597.

Adding to 205423273 its reverse (372324502), we get a palindrome (577747775).

The spelling of 205423273 in words is "two hundred five million, four hundred twenty-three thousand, two hundred seventy-three".