1328278406704 has 20 divisors (see below), whose sum is σ = 2573806427800. Its totient is φ = 664070296320.

The previous prime is 1328278406677. The next prime is 1328278406731. The reversal of 1328278406704 is 4076048728231.

It is an interprime number because it is at equal distance from previous prime (1328278406677) and next prime (1328278406731).

It is a super-2 number, since 2×1328278406704² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4147482 + ... + 4456249.

It is an arithmetic number, because the mean of its divisors is an integer number (128690321390).

Almost surely, 2^{1328278406704} is an apocalyptic number.

It is an amenable number.

1328278406704 is a deficient number, since it is larger than the sum of its proper divisors (1245528021096).

1328278406704 is an equidigital number, since it uses as much as digits as its factorization.

1328278406704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8613388 (or 8613382 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 1328278406704 in words is "one trillion, three hundred twenty-eight billion, two hundred seventy-eight million, four hundred six thousand, seven hundred four".