205366434 has 48 divisors (see below), whose sum is σ = 508312512. Its totient is φ = 54160704.

The previous prime is 205366411. The next prime is 205366481. The reversal of 205366434 is 434663502.

It is a junction number, because it is equal to n+sod(n) for n = 205366395 and 205366404.

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 23 ways as a sum of consecutive naturals, for example, 7369 + ... + 21564.

It is an arithmetic number, because the mean of its divisors is an integer number (10589844).

Almost surely, 2^205366434 is an apocalyptic number.

205366434 is an abundant number, since it is smaller than the sum of its proper divisors (302946078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205366434 is a wasteful number, since it uses less digits than its factorization.

205366434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28971 (or 28958 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 205366434 is about 14330.6117803812. The cubic root of 205366434 is about 589.9879668139.

The spelling of 205366434 in words is "two hundred five million, three hundred sixty-six thousand, four hundred thirty-four".