205839238 has 16 divisors (see below), whose sum is σ = 340303824. Its totient is φ = 92597760.

The previous prime is 205839199. The next prime is 205839241. The reversal of 205839238 is 832938502.

It is a self number, because there is not a number n which added to its sum of digits gives 205839238.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 46095 + ... + 50362.

It is an arithmetic number, because the mean of its divisors is an integer number (21268989).

Almost surely, 2^205839238 is an apocalyptic number.

205839238 is a deficient number, since it is larger than the sum of its proper divisors (134464586).

205839238 is a wasteful number, since it uses less digits than its factorization.

205839238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96567.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 205839238 is about 14347.0985917014. The cubic root of 205839238 is about 590.4403855614.

The spelling of 205839238 in words is "two hundred five million, eight hundred thirty-nine thousand, two hundred thirty-eight".