328935720 has 128 divisors (see below), whose sum is σ = 1050071040. Its totient is φ = 82145280.

The previous prime is 328935713. The next prime is 328935721. The reversal of 328935720 is 27539823.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (328935721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781110 + ... + 781530.

It is an arithmetic number, because the mean of its divisors is an integer number (8203680).

Almost surely, 2^328935720 is an apocalyptic number.

328935720 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 328935720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525035520).

328935720 is an abundant number, since it is smaller than the sum of its proper divisors (721135320).

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

328935720 is a wasteful number, since it uses less digits than its factorization.

328935720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 328935720 is about 18136.5851251000. The cubic root of 328935720 is about 690.2986314984.

The spelling of 328935720 in words is "three hundred twenty-eight million, nine hundred thirty-five thousand, seven hundred twenty".