205450426 has 16 divisors (see below), whose sum is σ = 316953000. Its totient is φ = 99819520.

The previous prime is 205450417. The next prime is 205450429. The reversal of 205450426 is 624054502.

It can be written as a sum of positive squares in 4 ways, for example, as 150675625 + 54774801 = 12275^2 + 7401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 205450394 and 205450403.

It is not an unprimeable number, because it can be changed into a prime (205450429) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16200 + ... + 25948.

Almost surely, 2^205450426 is an apocalyptic number.

205450426 is a deficient number, since it is larger than the sum of its proper divisors (111502574).

205450426 is a wasteful number, since it uses less digits than its factorization.

205450426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10049.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 205450426 is about 14333.5419907293. The cubic root of 205450426 is about 590.0683881275.

The spelling of 205450426 in words is "two hundred five million, four hundred fifty thousand, four hundred twenty-six".