505236 has 24 divisors (see below), whose sum is σ = 1197504. Its totient is φ = 165760.

The previous prime is 505231. The next prime is 505237. The reversal of 505236 is 632505.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505231) by changing a digit.

505236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2⁵⁰⁵²³⁶ is an apocalyptic number.

It is an amenable number.

505236 is an abundant number, since it is smaller than the sum of its proper divisors (692268).

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

505236 is a wasteful number, since it uses less digits than its factorization.

505236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 505236 is about 710.7995498029. The cubic root of 505236 is about 79.6461454782.

It can be divided in two parts, 505 and 236, that added together give a triangular number (741 = T₃₈).

The spelling of 505236 in words is "five hundred five thousand, two hundred thirty-six".