205940936 has 32 divisors (see below), whose sum is σ = 399475200. Its totient is φ = 99429120.

The previous prime is 205940923. The next prime is 205940947. The reversal of 205940936 is 639049502.

It is a self number, because there is not a number n which added to its sum of digits gives 205940936.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203600 + ... + 204608.

It is an arithmetic number, because the mean of its divisors is an integer number (12483600).

Almost surely, 2^205940936 is an apocalyptic number.

It is an amenable number.

205940936 is a deficient number, since it is larger than the sum of its proper divisors (193534264).

205940936 is a wasteful number, since it uses less digits than its factorization.

205940936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 205940936 is about 14350.6423549610. The cubic root of 205940936 is about 590.5376082300.

The spelling of 205940936 in words is "two hundred five million, nine hundred forty thousand, nine hundred thirty-six".