328021308 has 72 divisors (see below), whose sum is σ = 868192416. Its totient is φ = 104227200.

The previous prime is 328021303. The next prime is 328021327. The reversal of 328021308 is 803120823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328021303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 348118 + ... + 349058.

It is an arithmetic number, because the mean of its divisors is an integer number (12058228).

Almost surely, 2^328021308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328021308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434096208).

328021308 is an abundant number, since it is smaller than the sum of its proper divisors (540171108).

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

328021308 is a wasteful number, since it uses less digits than its factorization.

328021308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 328021308 is about 18111.3585354606. The cubic root of 328021308 is about 689.6583816176.

It can be divided in two parts, 328021 and 308, that added together give a square (328329 = 573²).

The spelling of 328021308 in words is "three hundred twenty-eight million, twenty-one thousand, three hundred eight".