268505856 has 54 divisors (see below), whose sum is σ = 774175220. Its totient is φ = 89501184.

The previous prime is 268505833. The next prime is 268505857. The reversal of 268505856 is 658505862.

268505856 is a `hidden beast` number, since 2 + 68 + 5 + 0 + 585 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (268505857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55966 + ... + 60573.

Almost surely, 2^268505856 is an apocalyptic number.

It is an amenable number.

268505856 is an abundant number, since it is smaller than the sum of its proper divisors (505669364).

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

268505856 is a wasteful number, since it uses less digits than its factorization.

268505856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116561 (or 116544 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 268505856 is about 16386.1482966559. The cubic root of 268505856 is about 645.1359655677.

It can be divided in two parts, 268505 and 856, that added together give a square (269361 = 519²).

The spelling of 268505856 in words is "two hundred sixty-eight million, five hundred five thousand, eight hundred fifty-six".