1328558216 has 16 divisors (see below), whose sum is σ = 2499853200. Its totient is φ = 661930704.

The previous prime is 1328558207. The next prime is 1328558221. The reversal of 1328558216 is 6128558231.

It is a super-2 number, since 2×1328558216² = 3530133866602205312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291146 + ... + 295673.

It is an arithmetic number, because the mean of its divisors is an integer number (156240825).

Almost surely, 2^1328558216 is an apocalyptic number.

It is an amenable number.

1328558216 is a deficient number, since it is larger than the sum of its proper divisors (1171294984).

1328558216 is a wasteful number, since it uses less digits than its factorization.

1328558216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587108 (or 587104 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 1328558216 is about 36449.3925326610. The cubic root of 1328558216 is about 1099.3269204644.

The spelling of 1328558216 in words is "one billion, three hundred twenty-eight million, five hundred fifty-eight thousand, two hundred sixteen".