328673220 has 192 divisors, whose sum is σ = 1016741376. Its totient is φ = 79073280.

The previous prime is 328673167. The next prime is 328673231. The reversal of 328673220 is 22376823.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2093382 + ... + 2093538.

It is an arithmetic number, because the mean of its divisors is an integer number (5295528).

Almost surely, 2^328673220 is an apocalyptic number.

328673220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328673220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508370688).

328673220 is an abundant number, since it is smaller than the sum of its proper divisors (688068156).

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

328673220 is a wasteful number, since it uses less digits than its factorization.

328673220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 328673220 is about 18129.3469270131. The cubic root of 328673220 is about 690.1149566921.

The spelling of 328673220 in words is "three hundred twenty-eight million, six hundred seventy-three thousand, two hundred twenty".