328399488 has 128 divisors (see below), whose sum is σ = 976752000. Its totient is φ = 108619776.

The previous prime is 328399459. The next prime is 328399493. The reversal of 328399488 is 884993823.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 576868 + ... + 577436.

It is an arithmetic number, because the mean of its divisors is an integer number (7630875).

Almost surely, 2^328399488 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 328399488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488376000).

328399488 is an abundant number, since it is smaller than the sum of its proper divisors (648352512).

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

328399488 is a wasteful number, since it uses less digits than its factorization.

328399488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 741 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 328399488 is about 18121.7959374892. The cubic root of 328399488 is about 689.9233185106.

The spelling of 328399488 in words is "three hundred twenty-eight million, three hundred ninety-nine thousand, four hundred eighty-eight".