328207280 has 20 divisors (see below), whose sum is σ = 763082112. Its totient is φ = 131282880.

The previous prime is 328207259. The next prime is 328207283. The reversal of 328207280 is 82702823.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (328207283) by changing a digit.

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, 2051216 + ... + 2051375.

Almost surely, 2^328207280 is an apocalyptic number.

It is an amenable number.

328207280 is an abundant number, since it is smaller than the sum of its proper divisors (434874832).

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

328207280 is a wasteful number, since it uses less digits than its factorization.

328207280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102604 (or 4102598 counting only the distinct ones).

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

The square root of 328207280 is about 18116.4919341466. The cubic root of 328207280 is about 689.7886911580.

The spelling of 328207280 in words is "three hundred twenty-eight million, two hundred seven thousand, two hundred eighty".