1266947448 has 32 divisors (see below), whose sum is σ = 3411013200. Its totient is φ = 389829888.

The previous prime is 1266947419. The next prime is 1266947471. The reversal of 1266947448 is 8447496621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266947448.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2030053 + ... + 2030676.

Almost surely, 2^1266947448 is an apocalyptic number.

It is an amenable number.

1266947448 is an abundant number, since it is smaller than the sum of its proper divisors (2144065752).

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

1266947448 is a wasteful number, since it uses less digits than its factorization.

1266947448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060751 (or 4060747 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 1266947448 is about 35594.2052587215. The cubic root of 1266947448 is about 1082.0637972139.

The spelling of 1266947448 in words is "one billion, two hundred sixty-six million, nine hundred forty-seven thousand, four hundred forty-eight".