268591278 has 8 divisors (see below), whose sum is σ = 537182568. Its totient is φ = 89530424.

The previous prime is 268591273. The next prime is 268591289. The reversal of 268591278 is 872195862.

268591278 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

268591278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268591273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22382601 + ... + 22382612.

It is an arithmetic number, because the mean of its divisors is an integer number (67147821).

Almost surely, 2^268591278 is an apocalyptic number.

268591278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

268591278 is a wasteful number, since it uses less digits than its factorization.

268591278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44765218.

The product of its digits is 483840, while the sum is 48.

The square root of 268591278 is about 16388.7546201656. The cubic root of 268591278 is about 645.2043724697.

The spelling of 268591278 in words is "two hundred sixty-eight million, five hundred ninety-one thousand, two hundred seventy-eight".