1328620328 has 16 divisors (see below), whose sum is σ = 2847043680. Its totient is φ = 569408688.

The previous prime is 1328620313. The next prime is 1328620339. The reversal of 1328620328 is 8230268231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11862626 + ... + 11862737.

It is an arithmetic number, because the mean of its divisors is an integer number (177940230).

Almost surely, 2^1328620328 is an apocalyptic number.

It is an amenable number.

1328620328 is an abundant number, since it is smaller than the sum of its proper divisors (1518423352).

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

1328620328 is a wasteful number, since it uses less digits than its factorization.

1328620328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23725376 (or 23725372 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1328620328 is about 36450.2445533634. The cubic root of 1328620328 is about 1099.3440519003.

Adding to 1328620328 its reverse (8230268231), we get a palindrome (9558888559).

The spelling of 1328620328 in words is "one billion, three hundred twenty-eight million, six hundred twenty thousand, three hundred twenty-eight".