1266366028 has 12 divisors (see below), whose sum is σ = 2217083400. Its totient is φ = 632913632.

The previous prime is 1266366007. The next prime is 1266366037. The reversal of 1266366028 is 8206636621.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56578 + ... + 75721.

It is an arithmetic number, because the mean of its divisors is an integer number (184756950).

Almost surely, 2^1266366028 is an apocalyptic number.

It is an amenable number.

1266366028 is a deficient number, since it is larger than the sum of its proper divisors (950717372).

1266366028 is a wasteful number, since it uses less digits than its factorization.

1266366028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134696 (or 134694 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 1266366028 is about 35586.0369808159. The cubic root of 1266366028 is about 1081.8982471226.

The spelling of 1266366028 in words is "one billion, two hundred sixty-six million, three hundred sixty-six thousand, twenty-eight".