328728960 has 384 divisors, whose sum is σ = 1344245760. Its totient is φ = 72437760.

The previous prime is 328728941. The next prime is 328728971. The reversal of 328728960 is 69827823.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent 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, 1249789 + ... + 1250051.

It is an arithmetic number, because the mean of its divisors is an integer number (3500640).

Almost surely, 2^328728960 is an apocalyptic number.

328728960 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 328728960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672122880).

328728960 is an abundant number, since it is smaller than the sum of its proper divisors (1015516800).

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

328728960 is a wasteful number, since it uses less digits than its factorization.

328728960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 328728960 is about 18130.8841483255. The cubic root of 328728960 is about 690.1539669014.

The spelling of 328728960 in words is "three hundred twenty-eight million, seven hundred twenty-eight thousand, nine hundred sixty".