505685240 has 16 divisors (see below), whose sum is σ = 1137791880. Its totient is φ = 202274080.

The previous prime is 505685233. The next prime is 505685249. The reversal of 505685240 is 42586505.

It is a self number, because there is not a number n which added to its sum of digits gives 505685240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505685249) 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 3 ways as a sum of consecutive naturals, for example, 6321026 + ... + 6321105.

Almost surely, 2^505685240 is an apocalyptic number.

It is an amenable number.

505685240 is an abundant number, since it is smaller than the sum of its proper divisors (632106640).

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

505685240 is a wasteful number, since it uses less digits than its factorization.

505685240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12642142 (or 12642138 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 505685240 is about 22487.4462756446. The cubic root of 505685240 is about 796.6974476960.

The spelling of 505685240 in words is "five hundred five million, six hundred eighty-five thousand, two hundred forty".