328740864 has 104 divisors (see below), whose sum is σ = 905859072. Its totient is φ = 105922560.

The previous prime is 328740859. The next prime is 328740901. The reversal of 328740864 is 468047823.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380497 + ... + 381359.

Almost surely, 2^328740864 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 328740864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452929536).

328740864 is an abundant number, since it is smaller than the sum of its proper divisors (577118208).

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

328740864 is an equidigital number, since it uses as much as digits as its factorization.

328740864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 328740864 is about 18131.2124249869. The cubic root of 328740864 is about 690.1622974662.

The spelling of 328740864 in words is "three hundred twenty-eight million, seven hundred forty thousand, eight hundred sixty-four".