328270280 has 128 divisors (see below), whose sum is σ = 824947200. Its totient is φ = 116812800.

The previous prime is 328270279. The next prime is 328270297. The reversal of 328270280 is 82072823.

It is a super-2 number, since 2×328270280² = 215522753462556800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2505815 + ... + 2505945.

It is an arithmetic number, because the mean of its divisors is an integer number (6444900).

Almost surely, 2^328270280 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 328270280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412473600).

328270280 is an abundant number, since it is smaller than the sum of its proper divisors (496676920).

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

328270280 is a wasteful number, since it uses less digits than its factorization.

328270280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 328270280 is about 18118.2305979364. The cubic root of 328270280 is about 689.8328237433.

The spelling of 328270280 in words is "three hundred twenty-eight million, two hundred seventy thousand, two hundred eighty".