1276227768 has 32 divisors (see below), whose sum is σ = 3199478400. Its totient is φ = 424221408.

The previous prime is 1276227767. The next prime is 1276227773. The reversal of 1276227768 is 8677226721.

It is a super-3 number, since 3×1276227768³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276227767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65446 + ... + 82677.

It is an arithmetic number, because the mean of its divisors is an integer number (99983700).

Almost surely, 2^1276227768 is an apocalyptic number.

It is an amenable number.

1276227768 is an abundant number, since it is smaller than the sum of its proper divisors (1923250632).

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

1276227768 is a wasteful number, since it uses less digits than its factorization.

1276227768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148491 (or 148487 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The square root of 1276227768 is about 35724.3301966601. The cubic root of 1276227768 is about 1084.6993916167.

The spelling of 1276227768 in words is "one billion, two hundred seventy-six million, two hundred twenty-seven thousand, seven hundred sixty-eight".