1328371688 has 16 divisors (see below), whose sum is σ = 2846510880. Its totient is φ = 569302128.

The previous prime is 1328371673. The next prime is 1328371697. The reversal of 1328371688 is 8861738231.

It is a happy 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, 11860406 + ... + 11860517.

It is an arithmetic number, because the mean of its divisors is an integer number (177906930).

Almost surely, 2^1328371688 is an apocalyptic number.

It is an amenable number.

1328371688 is an abundant number, since it is smaller than the sum of its proper divisors (1518139192).

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

1328371688 is a wasteful number, since it uses less digits than its factorization.

1328371688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23720936 (or 23720932 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 1328371688 is about 36446.8337170734. The cubic root of 1328371688 is about 1099.2754699906.

The spelling of 1328371688 in words is "one billion, three hundred twenty-eight million, three hundred seventy-one thousand, six hundred eighty-eight".