505031438 has 16 divisors (see below), whose sum is σ = 798282240. Its totient is φ = 238966200.

The previous prime is 505031357. The next prime is 505031441. The reversal of 505031438 is 834130505.

It is a self number, because there is not a number n which added to its sum of digits gives 505031438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30953 + ... + 44363.

It is an arithmetic number, because the mean of its divisors is an integer number (49892640).

Almost surely, 2^505031438 is an apocalyptic number.

505031438 is a deficient number, since it is larger than the sum of its proper divisors (293250802).

505031438 is a wasteful number, since it uses less digits than its factorization.

505031438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14423.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 505031438 is about 22472.9045296775. The cubic root of 505031438 is about 796.3539487574.

The spelling of 505031438 in words is "five hundred five million, thirty-one thousand, four hundred thirty-eight".