768240256 has 32 divisors (see below), whose sum is σ = 1749120480. Its totient is φ = 329245440.

The previous prime is 768240203. The next prime is 768240259. The reversal of 768240256 is 652042867.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (768240259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427810 + ... + 429601.

It is an arithmetic number, because the mean of its divisors is an integer number (54660015).

Almost surely, 2^768240256 is an apocalyptic number.

It is an amenable number.

768240256 is an abundant number, since it is smaller than the sum of its proper divisors (980880224).

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

768240256 is an equidigital number, since it uses as much as digits as its factorization.

768240256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857432 (or 857420 counting only the distinct ones).

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

The square root of 768240256 is about 27717.1473279629. The cubic root of 768240256 is about 915.8668786924.

The spelling of 768240256 in words is "seven hundred sixty-eight million, two hundred forty thousand, two hundred fifty-six".