328921488 has 120 divisors (see below), whose sum is σ = 1059483776. Its totient is φ = 93312000.

The previous prime is 328921469. The next prime is 328921547. The reversal of 328921488 is 884129823.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151128 + ... + 153288.

Almost surely, 2^328921488 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 328921488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529741888).

328921488 is an abundant number, since it is smaller than the sum of its proper divisors (730562288).

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

328921488 is a wasteful number, since it uses less digits than its factorization.

328921488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2324 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 328921488 is about 18136.1927647453. The cubic root of 328921488 is about 690.2886756811.

The spelling of 328921488 in words is "three hundred twenty-eight million, nine hundred twenty-one thousand, four hundred eighty-eight".