268340256 has 96 divisors (see below), whose sum is σ = 788719680. Its totient is φ = 88754688.

The previous prime is 268340239. The next prime is 268340329. The reversal of 268340256 is 652043862.

268340256 is a `hidden beast` number, since 2 + 68 + 340 + 256 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 268340256.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117235 + ... + 119501.

It is an arithmetic number, because the mean of its divisors is an integer number (8215830).

Almost surely, 2^268340256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268340256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394359840).

268340256 is an abundant number, since it is smaller than the sum of its proper divisors (520379424).

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

268340256 is a wasteful number, since it uses less digits than its factorization.

268340256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2409 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 268340256 is about 16381.0944689297. The cubic root of 268340256 is about 645.0033098803.

The spelling of 268340256 in words is "two hundred sixty-eight million, three hundred forty thousand, two hundred fifty-six".