505240782 has 24 divisors (see below), whose sum is σ = 1073421816. Its totient is φ = 158506368.

The previous prime is 505240763. The next prime is 505240783. The reversal of 505240782 is 287042505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505240783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143953 + ... + 147420.

It is an arithmetic number, because the mean of its divisors is an integer number (44725909).

Almost surely, 2^505240782 is an apocalyptic number.

505240782 is an abundant number, since it is smaller than the sum of its proper divisors (568181034).

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

505240782 is a wasteful number, since it uses less digits than its factorization.

505240782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291412 (or 291395 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 505240782 is about 22477.5617449936. The cubic root of 505240782 is about 796.4639675793.

The spelling of 505240782 in words is "five hundred five million, two hundred forty thousand, seven hundred eighty-two".