268740256 has 24 divisors (see below), whose sum is σ = 556930080. Its totient is φ = 127297728.

The previous prime is 268740253. The next prime is 268740289. The reversal of 268740256 is 652047862.

It is not an unprimeable number, because it can be changed into a prime (268740253) 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, 220396 + ... + 221611.

It is an arithmetic number, because the mean of its divisors is an integer number (23205420).

Almost surely, 2^268740256 is an apocalyptic number.

It is an amenable number.

268740256 is an abundant number, since it is smaller than the sum of its proper divisors (288189824).

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

268740256 is a wasteful number, since it uses less digits than its factorization.

268740256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442036 (or 442028 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 268740256 is about 16393.2991188473. The cubic root of 268740256 is about 645.3236410371.

The spelling of 268740256 in words is "two hundred sixty-eight million, seven hundred forty thousand, two hundred fifty-six".