1272816966 has 16 divisors (see below), whose sum is σ = 2556288000. Its totient is φ = 422496648.

The previous prime is 1272816913. The next prime is 1272816991. The reversal of 1272816966 is 6696182721.

It is a Curzon number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 442366 + ... + 445233.

It is an arithmetic number, because the mean of its divisors is an integer number (159768000).

Almost surely, 2^1272816966 is an apocalyptic number.

1272816966 is an abundant number, since it is smaller than the sum of its proper divisors (1283471034).

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

1272816966 is a wasteful number, since it uses less digits than its factorization.

1272816966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887843.

The product of its digits is 435456, while the sum is 48.

The square root of 1272816966 is about 35676.5604564117. The cubic root of 1272816966 is about 1083.7322195226.

The spelling of 1272816966 in words is "one billion, two hundred seventy-two million, eight hundred sixteen thousand, nine hundred sixty-six".