268388907 has 8 divisors (see below), whose sum is σ = 357971520. Its totient is φ = 178866120.

The previous prime is 268388903. The next prime is 268388933. The reversal of 268388907 is 709883862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268388907 - 2² = 268388903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268388907.

It is not an unprimeable number, because it can be changed into a prime (268388903) 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 7 ways as a sum of consecutive naturals, for example, 3157 + ... + 23382.

It is an arithmetic number, because the mean of its divisors is an integer number (44746440).

Almost surely, 2^268388907 is an apocalyptic number.

268388907 is a deficient number, since it is larger than the sum of its proper divisors (89582613).

268388907 is a wasteful number, since it uses less digits than its factorization.

268388907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29913.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 268388907 is about 16382.5793756661. The cubic root of 268388907 is about 645.0422879551.

The spelling of 268388907 in words is "two hundred sixty-eight million, three hundred eighty-eight thousand, nine hundred seven".