505000816 has 10 divisors (see below), whose sum is σ = 978439112. Its totient is φ = 252500400.

The previous prime is 505000807. The next prime is 505000817. The reversal of 505000816 is 618000505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505000817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15781260 + ... + 15781291.

Almost surely, 2^505000816 is an apocalyptic number.

It is an amenable number.

505000816 is a deficient number, since it is larger than the sum of its proper divisors (473438296).

505000816 is a wasteful number, since it uses less digits than its factorization.

505000816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31562559 (or 31562553 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 505000816 is about 22472.2232099986. The cubic root of 505000816 is about 796.3378530971.

The spelling of 505000816 in words is "five hundred five million, eight hundred sixteen", and thus it is an aban number.