1328869584 has 80 divisors (see below), whose sum is σ = 4359264640. Its totient is φ = 379676160.

The previous prime is 1328869579. The next prime is 1328869603. The reversal of 1328869584 is 4859688231.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1328869584.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216697 + ... + 222744.

It is an arithmetic number, because the mean of its divisors is an integer number (54490808).

Almost surely, 2^1328869584 is an apocalyptic number.

1328869584 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1328869584 is an abundant number, since it is smaller than the sum of its proper divisors (3030395056).

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

1328869584 is a wasteful number, since it uses less digits than its factorization.

1328869584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439465 (or 439453 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 1328869584 is about 36453.6635195970. The cubic root of 1328869584 is about 1099.4127951325.

The spelling of 1328869584 in words is "one billion, three hundred twenty-eight million, eight hundred sixty-nine thousand, five hundred eighty-four".