205544434 has 8 divisors (see below), whose sum is σ = 308506608. Its totient is φ = 102708900.

The previous prime is 205544419. The next prime is 205544453. The reversal of 205544434 is 434445502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 205544396 and 205544405.

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 3 ways as a sum of consecutive naturals, for example, 27492 + ... + 34159.

It is an arithmetic number, because the mean of its divisors is an integer number (38563326).

Almost surely, 2^205544434 is an apocalyptic number.

205544434 is a deficient number, since it is larger than the sum of its proper divisors (102962174).

205544434 is a wasteful number, since it uses less digits than its factorization.

205544434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63320.

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 205544434 is about 14336.8209167863. The cubic root of 205544434 is about 590.1583736479.

Adding to 205544434 its reverse (434445502), we get a palindrome (639989936).

The spelling of 205544434 in words is "two hundred five million, five hundred forty-four thousand, four hundred thirty-four".