268396305 has 32 divisors (see below), whose sum is σ = 450921600. Its totient is φ = 136131072.

The previous prime is 268396301. The next prime is 268396313. The reversal of 268396305 is 503693862.

It is not a de Polignac number, because 268396305 - 2² = 268396301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (268396301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24541 + ... + 33749.

It is an arithmetic number, because the mean of its divisors is an integer number (14091300).

Almost surely, 2^268396305 is an apocalyptic number.

It is an amenable number.

268396305 is a deficient number, since it is larger than the sum of its proper divisors (182525295).

268396305 is a wasteful number, since it uses less digits than its factorization.

268396305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9313.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 268396305 is about 16382.8051627308. The cubic root of 268396305 is about 645.0482146519.

The spelling of 268396305 in words is "two hundred sixty-eight million, three hundred ninety-six thousand, three hundred five".