505667240 has 64 divisors (see below), whose sum is σ = 1228953600. Its totient is φ = 186147072.

The previous prime is 505667233. The next prime is 505667251. The reversal of 505667240 is 42766505.

It is a self number, because there is not a number n which added to its sum of digits gives 505667240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197891 + ... + 200429.

It is an arithmetic number, because the mean of its divisors is an integer number (19202400).

Almost surely, 2^505667240 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 505667240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614476800).

505667240 is an abundant number, since it is smaller than the sum of its proper divisors (723286360).

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

505667240 is a wasteful number, since it uses less digits than its factorization.

505667240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 505667240 is about 22487.0460487811. The cubic root of 505667240 is about 796.6879946983.

The spelling of 505667240 in words is "five hundred five million, six hundred sixty-seven thousand, two hundred forty".