205711422 has 16 divisors (see below), whose sum is σ = 470197632. Its totient is φ = 58774680.

The previous prime is 205711417. The next prime is 205711439. The reversal of 205711422 is 224117502.

It is a junction number, because it is equal to n+sod(n) for n = 205711392 and 205711401.

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, 2448904 + ... + 2448987.

It is an arithmetic number, because the mean of its divisors is an integer number (29387352).

Almost surely, 2^205711422 is an apocalyptic number.

205711422 is an abundant number, since it is smaller than the sum of its proper divisors (264486210).

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

205711422 is a wasteful number, since it uses less digits than its factorization.

205711422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897903.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 205711422 is about 14342.6434801957. The cubic root of 205711422 is about 590.3181488181.

Adding to 205711422 its reverse (224117502), we get a palindrome (429828924).

The spelling of 205711422 in words is "two hundred five million, seven hundred eleven thousand, four hundred twenty-two".