505313238 has 8 divisors (see below), whose sum is σ = 1010626488. Its totient is φ = 168437744.

The previous prime is 505313191. The next prime is 505313239. The reversal of 505313238 is 832313505.

It is a sphenic number, since it is the product of 3 distinct primes.

505313238 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505313239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42109431 + ... + 42109442.

It is an arithmetic number, because the mean of its divisors is an integer number (126328311).

Almost surely, 2^505313238 is an apocalyptic number.

505313238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

505313238 is a wasteful number, since it uses less digits than its factorization.

505313238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84218878.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 505313238 is about 22479.1734278643. The cubic root of 505313238 is about 796.5020390869.

The spelling of 505313238 in words is "five hundred five million, three hundred thirteen thousand, two hundred thirty-eight".