328916591220 has 96 divisors (see below), whose sum is σ = 1086485815296. Its totient is φ = 72755740800.

The previous prime is 328916591191. The next prime is 328916591231. The reversal of 328916591220 is 22195619823.

It is a happy number.

It is a super-3 number, since 3×328916591220³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 328916591220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12618186 + ... + 12644225.

It is an arithmetic number, because the mean of its divisors is an integer number (11317560576).

Almost surely, 2^328916591220 is an apocalyptic number.

328916591220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328916591220 is an abundant number, since it is smaller than the sum of its proper divisors (757569224076).

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

328916591220 is a wasteful number, since it uses less digits than its factorization.

328916591220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25262461 (or 25262459 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 328916591220 in words is "three hundred twenty-eight billion, nine hundred sixteen million, five hundred ninety-one thousand, two hundred twenty".