1279448268 has 48 divisors (see below), whose sum is σ = 3420856320. Its totient is φ = 364593024.

The previous prime is 1279448267. The next prime is 1279448363. The reversal of 1279448268 is 8628449721.

It is a self number, because there is not a number n which added to its sum of digits gives 1279448268.

It is not an unprimeable number, because it can be changed into a prime (1279448267) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12288 + ... + 52056.

It is an arithmetic number, because the mean of its divisors is an integer number (71267840).

Almost surely, 2^1279448268 is an apocalyptic number.

It is an amenable number.

1279448268 is an abundant number, since it is smaller than the sum of its proper divisors (2141408052).

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

1279448268 is a wasteful number, since it uses less digits than its factorization.

1279448268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40166 (or 40164 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 1279448268 is about 35769.3761198039. The cubic root of 1279448268 is about 1085.6110209826.

The spelling of 1279448268 in words is "one billion, two hundred seventy-nine million, four hundred forty-eight thousand, two hundred sixty-eight".