1276223376 has 120 divisors (see below), whose sum is σ = 3462471840. Its totient is φ = 404974080.

The previous prime is 1276223321. The next prime is 1276223393. The reversal of 1276223376 is 6733226721.

It is a super-2 number, since 2×1276223376² = 3257492210897674752, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 3367155 + ... + 3367533.

It is an arithmetic number, because the mean of its divisors is an integer number (28853932).

Almost surely, 2^1276223376 is an apocalyptic number.

1276223376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1276223376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1731235920).

1276223376 is an abundant number, since it is smaller than the sum of its proper divisors (2186248464).

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

1276223376 is a wasteful number, since it uses less digits than its factorization.

1276223376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 488 counting only the distinct ones).

The product of its digits is 127008, while the sum is 39.

The square root of 1276223376 is about 35724.2687258956. The cubic root of 1276223376 is about 1084.6981473233.

The spelling of 1276223376 in words is "one billion, two hundred seventy-six million, two hundred twenty-three thousand, three hundred seventy-six".