205422436 has 12 divisors (see below), whose sum is σ = 364040320. Its totient is φ = 101410920.

The previous prime is 205422421. The next prime is 205422443. The reversal of 205422436 is 634224502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324720 + ... + 325351.

Almost surely, 2^205422436 is an apocalyptic number.

It is an amenable number.

205422436 is a deficient number, since it is larger than the sum of its proper divisors (158617884).

205422436 is a wasteful number, since it uses less digits than its factorization.

205422436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650154 (or 650152 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 205422436 is about 14332.5655763370. The cubic root of 205422436 is about 590.0415904800.

Adding to 205422436 its reverse (634224502), we get a palindrome (839646938).

It can be divided in two parts, 205 and 422436, that multiplied together give a triangular number (86599380 = T₁₃₁₆₀).

The spelling of 205422436 in words is "two hundred five million, four hundred twenty-two thousand, four hundred thirty-six".