1326116728 has 16 divisors (see below), whose sum is σ = 2506049280. Its totient is φ = 657836928.

The previous prime is 1326116711. The next prime is 1326116767. The reversal of 1326116728 is 8276116231.

It is a congruent number.

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, 651601 + ... + 653632.

It is an arithmetic number, because the mean of its divisors is an integer number (156628080).

Almost surely, 2^1326116728 is an apocalyptic number.

It is an amenable number.

1326116728 is a deficient number, since it is larger than the sum of its proper divisors (1179932552).

1326116728 is a wasteful number, since it uses less digits than its factorization.

1326116728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305366 (or 1305362 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 1326116728 is about 36415.8856544778. The cubic root of 1326116728 is about 1098.6530974546.

The spelling of 1326116728 in words is "one billion, three hundred twenty-six million, one hundred sixteen thousand, seven hundred twenty-eight".