505044036 has 72 divisors (see below), whose sum is σ = 1473536064. Its totient is φ = 142862400.

The previous prime is 505044017. The next prime is 505044079. The reversal of 505044036 is 630440505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15531 + ... + 35373.

Almost surely, 2^505044036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505044036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736768032).

505044036 is an abundant number, since it is smaller than the sum of its proper divisors (968492028).

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

505044036 is a wasteful number, since it uses less digits than its factorization.

505044036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19961 (or 19956 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 505044036 is about 22473.1848210261. The cubic root of 505044036 is about 796.3605703806.

The spelling of 505044036 in words is "five hundred five million, forty-four thousand, thirty-six".