328256730 has 96 divisors (see below), whose sum is σ = 908107200. Its totient is φ = 82031616.

The previous prime is 328256729. The next prime is 328256743. The reversal of 328256730 is 37652823.

328256730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164881 + ... + 166859.

It is an arithmetic number, because the mean of its divisors is an integer number (9459450).

Almost surely, 2^328256730 is an apocalyptic number.

328256730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 328256730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454053600).

328256730 is an abundant number, since it is smaller than the sum of its proper divisors (579850470).

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

328256730 is a wasteful number, since it uses less digits than its factorization.

328256730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 2105 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 328256730 is about 18117.8566613162. The cubic root of 328256730 is about 689.8233322115.

The spelling of 328256730 in words is "three hundred twenty-eight million, two hundred fifty-six thousand, seven hundred thirty".