1276268844 has 24 divisors (see below), whose sum is σ = 2980087488. Its totient is φ = 425119120.

The previous prime is 1276268837. The next prime is 1276268849. The reversal of 1276268844 is 4488626721.

It is a junction number, because it is equal to n+sod(n) for n = 1276268793 and 1276268802.

It is not an unprimeable number, because it can be changed into a prime (1276268849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20142 + ... + 54389.

It is an arithmetic number, because the mean of its divisors is an integer number (124170312).

Almost surely, 2^1276268844 is an apocalyptic number.

It is an amenable number.

1276268844 is an abundant number, since it is smaller than the sum of its proper divisors (1703818644).

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

1276268844 is a wasteful number, since it uses less digits than its factorization.

1276268844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75965 (or 75963 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 1276268844 is about 35724.9050943456. The cubic root of 1276268844 is about 1084.7110286811.

The spelling of 1276268844 in words is "one billion, two hundred seventy-six million, two hundred sixty-eight thousand, eight hundred forty-four".