205822538 has 16 divisors (see below), whose sum is σ = 323277696. Its totient is φ = 98094480.

The previous prime is 205822537. The next prime is 205822543. The reversal of 205822538 is 835228502.

It is a super-2 number, since 2×205822538² = 84725834297522888, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205822498 and 205822507.

It is not an unprimeable number, because it can be changed into a prime (205822537) by changing a digit.

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, 5843 + ... + 21113.

It is an arithmetic number, because the mean of its divisors is an integer number (20204856).

Almost surely, 2^205822538 is an apocalyptic number.

205822538 is a deficient number, since it is larger than the sum of its proper divisors (117455158).

205822538 is a wasteful number, since it uses less digits than its factorization.

205822538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15589.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 205822538 is about 14346.5165806895. The cubic root of 205822538 is about 590.4244174023.

The spelling of 205822538 in words is "two hundred five million, eight hundred twenty-two thousand, five hundred thirty-eight".