328815872 has 108 divisors (see below), whose sum is σ = 833265216. Its totient is φ = 128056320.

The previous prime is 328815863. The next prime is 328815913. The reversal of 328815872 is 278518823.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136793 + ... + 139175.

Almost surely, 2^328815872 is an apocalyptic number.

328815872 is a gapful number since it is divisible by the number (32) 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 328815872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416632608).

328815872 is an abundant number, since it is smaller than the sum of its proper divisors (504449344).

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

328815872 is a wasteful number, since it uses less digits than its factorization.

328815872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2403 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The square root of 328815872 is about 18133.2807842376. The cubic root of 328815872 is about 690.2147843564.

The spelling of 328815872 in words is "three hundred twenty-eight million, eight hundred fifteen thousand, eight hundred seventy-two".