268505904 has 20 divisors (see below), whose sum is σ = 693640376. Its totient is φ = 89501952.

The previous prime is 268505903. The next prime is 268505921. The reversal of 268505904 is 409505862.

It is not an unprimeable number, because it can be changed into a prime (268505903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2796889 + ... + 2796984.

Almost surely, 2^268505904 is an apocalyptic number.

268505904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

268505904 is an abundant number, since it is smaller than the sum of its proper divisors (425134472).

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

268505904 is a wasteful number, since it uses less digits than its factorization.

268505904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593884 (or 5593878 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 268505904 is about 16386.1497613076. The cubic root of 268505904 is about 645.1360040107.

The spelling of 268505904 in words is "two hundred sixty-eight million, five hundred five thousand, nine hundred four".