1328775128 has 32 divisors (see below), whose sum is σ = 2579569200. Its totient is φ = 640929408.

The previous prime is 1328775101. The next prime is 1328775163. The reversal of 1328775128 is 8215778231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446975 + ... + 449937.

Almost surely, 2^1328775128 is an apocalyptic number.

It is an amenable number.

1328775128 is a deficient number, since it is larger than the sum of its proper divisors (1250794072).

1328775128 is a wasteful number, since it uses less digits than its factorization.

1328775128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931 (or 4927 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 1328775128 is about 36452.3679340588. The cubic root of 1328775128 is about 1099.3867457753.

The spelling of 1328775128 in words is "one billion, three hundred twenty-eight million, seven hundred seventy-five thousand, one hundred twenty-eight".