505705236 has 24 divisors (see below), whose sum is σ = 1180401600. Its totient is φ = 168508032.

The previous prime is 505705231. The next prime is 505705247. The reversal of 505705236 is 632507505.

It is a junction number, because it is equal to n+sod(n) for n = 505705197 and 505705206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505705231) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38665 + ... + 50063.

It is an arithmetic number, because the mean of its divisors is an integer number (49183400).

Almost surely, 2^505705236 is an apocalyptic number.

It is an amenable number.

505705236 is an abundant number, since it is smaller than the sum of its proper divisors (674696364).

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

505705236 is a wasteful number, since it uses less digits than its factorization.

505705236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15103 (or 15101 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 505705236 is about 22487.8908748686. The cubic root of 505705236 is about 796.7079486631.

The spelling of 505705236 in words is "five hundred five million, seven hundred five thousand, two hundred thirty-six".