505168408 has 64 divisors (see below), whose sum is σ = 995328000. Its totient is φ = 240186240.

The previous prime is 505168403. The next prime is 505168441. The reversal of 505168408 is 804861505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505168403) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3390318 + ... + 3390466.

It is an arithmetic number, because the mean of its divisors is an integer number (15552000).

Almost surely, 2^505168408 is an apocalyptic number.

It is an amenable number.

505168408 is a deficient number, since it is larger than the sum of its proper divisors (490159592).

505168408 is a wasteful number, since it uses less digits than its factorization.

505168408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 505168408 is about 22475.9517707260. The cubic root of 505168408 is about 796.4259355241.

The spelling of 505168408 in words is "five hundred five million, one hundred sixty-eight thousand, four hundred eight".