505685488 has 120 divisors (see below), whose sum is σ = 1253919744. Its totient is φ = 195350400.

The previous prime is 505685483. The next prime is 505685503. The reversal of 505685488 is 884586505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505685483) by changing a digit.

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, 1647031 + ... + 1647337.

Almost surely, 2^505685488 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 505685488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626959872).

505685488 is an abundant number, since it is smaller than the sum of its proper divisors (748234256).

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

505685488 is a wasteful number, since it uses less digits than its factorization.

505685488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 49.

The square root of 505685488 is about 22487.4517898316. The cubic root of 505685488 is about 796.6975779357.

The spelling of 505685488 in words is "five hundred five million, six hundred eighty-five thousand, four hundred eighty-eight".