1271308328 has 8 divisors (see below), whose sum is σ = 2383703130. Its totient is φ = 635654160.

The previous prime is 1271308309. The next prime is 1271308393. The reversal of 1271308328 is 8238031721.

It can be written as a sum of positive squares in only one way, i.e., 1229343844 + 41964484 = 35062^2 + 6478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79456763 + ... + 79456778.

Almost surely, 2^1271308328 is an apocalyptic number.

It is an amenable number.

1271308328 is a deficient number, since it is larger than the sum of its proper divisors (1112394802).

1271308328 is a wasteful number, since it uses less digits than its factorization.

1271308328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158913547 (or 158913543 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1271308328 is about 35655.4109217661. The cubic root of 1271308328 is about 1083.3038767112.

The spelling of 1271308328 in words is "one billion, two hundred seventy-one million, three hundred eight thousand, three hundred twenty-eight".