205540034 has 16 divisors (see below), whose sum is σ = 352565568. Its totient is φ = 88035792.

The previous prime is 205540019. The next prime is 205540057. The reversal of 205540034 is 430045502.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205539991 and 205540009.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28037 + ... + 34599.

It is an arithmetic number, because the mean of its divisors is an integer number (22035348).

Almost surely, 2^205540034 is an apocalyptic number.

205540034 is a deficient number, since it is larger than the sum of its proper divisors (147025534).

205540034 is a wasteful number, since it uses less digits than its factorization.

205540034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 205540034 is about 14336.6674649306. The cubic root of 205540034 is about 590.1541625303.

Adding to 205540034 its reverse (430045502), we get a palindrome (635585536).

The spelling of 205540034 in words is "two hundred five million, five hundred forty thousand, thirty-four".