1312767680 has 56 divisors (see below), whose sum is σ = 3572609568. Its totient is φ = 450091008.

The previous prime is 1312767667. The next prime is 1312767697. The reversal of 1312767680 is 867672131.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290789 + ... + 295268.

Almost surely, 2^1312767680 is an apocalyptic number.

1312767680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312767680 is an abundant number, since it is smaller than the sum of its proper divisors (2259841888).

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

1312767680 is an equidigital number, since it uses as much as digits as its factorization.

1312767680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586081 (or 586071 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1312767680 is about 36232.1360121095. The cubic root of 1312767680 is about 1094.9542122733.

The spelling of 1312767680 in words is "one billion, three hundred twelve million, seven hundred sixty-seven thousand, six hundred eighty".