205040082 has 64 divisors (see below), whose sum is σ = 456736896. Its totient is φ = 60963840.

The previous prime is 205040053. The next prime is 205040083. The reversal of 205040082 is 280040502.

It is not an unprimeable number, because it can be changed into a prime (205040083) 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 31 ways as a sum of consecutive naturals, for example, 378732 + ... + 379272.

It is an arithmetic number, because the mean of its divisors is an integer number (7136514).

Almost surely, 2^205040082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205040082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228368448).

205040082 is an abundant number, since it is smaller than the sum of its proper divisors (251696814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205040082 is a wasteful number, since it uses less digits than its factorization.

205040082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 205040082 is about 14319.2207190196. The cubic root of 205040082 is about 589.6752804755.

Adding to 205040082 its reverse (280040502), we get a palindrome (485080584).

The spelling of 205040082 in words is "two hundred five million, forty thousand, eighty-two".