328444816 has 40 divisors (see below), whose sum is σ = 741006144. Its totient is φ = 138103680.

The previous prime is 328444769. The next prime is 328444817. The reversal of 328444816 is 618444823.

It is a happy number.

328444816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (328444817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21730 + ... + 33601.

Almost surely, 2^328444816 is an apocalyptic number.

It is an amenable number.

328444816 is an abundant number, since it is smaller than the sum of its proper divisors (412561328).

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

328444816 is a wasteful number, since it uses less digits than its factorization.

328444816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55399 (or 55393 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 328444816 is about 18123.0465430071. The cubic root of 328444816 is about 689.9550597350.

The spelling of 328444816 in words is "three hundred twenty-eight million, four hundred forty-four thousand, eight hundred sixteen".