1296376928 has 72 divisors (see below), whose sum is σ = 3238880904. Its totient is φ = 505075200.

The previous prime is 1296376867. The next prime is 1296376931. The reversal of 1296376928 is 8296736921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1296376928.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 20333 + ... + 54828.

It is an arithmetic number, because the mean of its divisors is an integer number (44984457).

Almost surely, 2^1296376928 is an apocalyptic number.

It is an amenable number.

1296376928 is an abundant number, since it is smaller than the sum of its proper divisors (1942503976).

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

1296376928 is a wasteful number, since it uses less digits than its factorization.

1296376928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75196 (or 75181 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 1296376928 is about 36005.2347305222. The cubic root of 1296376928 is about 1090.3780435451.

The spelling of 1296376928 in words is "one billion, two hundred ninety-six million, three hundred seventy-six thousand, nine hundred twenty-eight".