505394238 has 8 divisors (see below), whose sum is σ = 1010788488. Its totient is φ = 168464744.

The previous prime is 505394237. The next prime is 505394261. The reversal of 505394238 is 832493505.

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

505394238 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 505394196 and 505394205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505394237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42116181 + ... + 42116192.

It is an arithmetic number, because the mean of its divisors is an integer number (126348561).

Almost surely, 2^505394238 is an apocalyptic number.

505394238 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.

505394238 is a wasteful number, since it uses less digits than its factorization.

505394238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84232378.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 505394238 is about 22480.9750233392. The cubic root of 505394238 is about 796.5445956725.

The spelling of 505394238 in words is "five hundred five million, three hundred ninety-four thousand, two hundred thirty-eight".