205013434 has 16 divisors (see below), whose sum is σ = 318009888. Its totient is φ = 99068112.

The previous prime is 205013359. The next prime is 205013491. The reversal of 205013434 is 434310502.

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, 7332 + ... + 21535.

It is an arithmetic number, because the mean of its divisors is an integer number (19875618).

Almost surely, 2^205013434 is an apocalyptic number.

205013434 is a deficient number, since it is larger than the sum of its proper divisors (112996454).

205013434 is a wasteful number, since it uses less digits than its factorization.

205013434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28989.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 205013434 is about 14318.2901912205. The cubic root of 205013434 is about 589.6497336856.

Adding to 205013434 its reverse (434310502), we get a palindrome (639323936).

The spelling of 205013434 in words is "two hundred five million, thirteen thousand, four hundred thirty-four".