1328765488 has 20 divisors (see below), whose sum is σ = 2594139768. Its totient is φ = 659310080.

The previous prime is 1328765467. The next prime is 1328765519. The reversal of 1328765488 is 8845678231.

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, 314881 + ... + 319072.

Almost surely, 2^1328765488 is an apocalyptic number.

It is an amenable number.

1328765488 is a deficient number, since it is larger than the sum of its proper divisors (1265374280).

1328765488 is a wasteful number, since it uses less digits than its factorization.

1328765488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634092 (or 634086 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The square root of 1328765488 is about 36452.2357064694. The cubic root of 1328765488 is about 1099.3840871579.

The spelling of 1328765488 in words is "one billion, three hundred twenty-eight million, seven hundred sixty-five thousand, four hundred eighty-eight".