205040782 has 16 divisors (see below), whose sum is σ = 315124992. Its totient is φ = 100020960.

The previous prime is 205040747. The next prime is 205040821. The reversal of 205040782 is 287040502.

It is a self number, because there is not a number n which added to its sum of digits gives 205040782.

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, 13843 + ... + 24529.

It is an arithmetic number, because the mean of its divisors is an integer number (19695312).

Almost surely, 2^205040782 is an apocalyptic number.

205040782 is a deficient number, since it is larger than the sum of its proper divisors (110084210).

205040782 is a wasteful number, since it uses less digits than its factorization.

205040782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10923.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 205040782 is about 14319.2451616697. The cubic root of 205040782 is about 589.6759515186.

The spelling of 205040782 in words is "two hundred five million, forty thousand, seven hundred eighty-two".