268840786 has 16 divisors (see below), whose sum is σ = 413520408. Its totient is φ = 131040000.

The previous prime is 268840777. The next prime is 268840801. The reversal of 268840786 is 687048862.

268840786 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 77986561 + 190854225 = 8831^2 + 13815^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4036 + ... + 23536.

Almost surely, 2^268840786 is an apocalyptic number.

268840786 is a deficient number, since it is larger than the sum of its proper divisors (144679622).

268840786 is a wasteful number, since it uses less digits than its factorization.

268840786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19677.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 268840786 is about 16396.3650239924. The cubic root of 268840786 is about 645.4040982773.

The spelling of 268840786 in words is "two hundred sixty-eight million, eight hundred forty thousand, seven hundred eighty-six".