328987233648 has 120 divisors (see below), whose sum is σ = 952152121856. Its totient is φ = 105930115200.

The previous prime is 328987233637. The next prime is 328987233649. The reversal of 328987233648 is 846332789823.

It is a happy number.

328987233648 is a `hidden beast` number, since 3 + 289 + 87 + 233 + 6 + 48 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328987233649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2374443 + ... + 2509173.

Almost surely, 2^328987233648 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 328987233648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476076060928).

328987233648 is an abundant number, since it is smaller than the sum of its proper divisors (623164888208).

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

328987233648 is a wasteful number, since it uses less digits than its factorization.

328987233648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135323 (or 135314 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 63.

The spelling of 328987233648 in words is "three hundred twenty-eight billion, nine hundred eighty-seven million, two hundred thirty-three thousand, six hundred forty-eight".