268266778 has 32 divisors (see below), whose sum is σ = 442632960. Its totient is φ = 121193280.

The previous prime is 268266703. The next prime is 268266793. The reversal of 268266778 is 877662862.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268576 + ... + 269572.

It is an arithmetic number, because the mean of its divisors is an integer number (13832280).

Almost surely, 2^268266778 is an apocalyptic number.

268266778 is a deficient number, since it is larger than the sum of its proper divisors (174366182).

268266778 is a wasteful number, since it uses less digits than its factorization.

268266778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222.

The product of its digits is 2709504, while the sum is 52.

The square root of 268266778 is about 16378.8515470408. The cubic root of 268266778 is about 644.9444320456.

The spelling of 268266778 in words is "two hundred sixty-eight million, two hundred sixty-six thousand, seven hundred seventy-eight".