1328017388 has 24 divisors (see below), whose sum is σ = 2506020720. Its totient is φ = 613716480.

The previous prime is 1328017381. The next prime is 1328017391. The reversal of 1328017388 is 8837108231.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (1328017381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209981 + ... + 216212.

It is an arithmetic number, because the mean of its divisors is an integer number (104417530).

Almost surely, 2^1328017388 is an apocalyptic number.

It is an amenable number.

1328017388 is a deficient number, since it is larger than the sum of its proper divisors (1178003332).

1328017388 is a wasteful number, since it uses less digits than its factorization.

1328017388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426257 (or 426255 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 1328017388 is about 36441.9728884154. The cubic root of 1328017388 is about 1099.1777292920.

The spelling of 1328017388 in words is "one billion, three hundred twenty-eight million, seventeen thousand, three hundred eighty-eight".