328711992 has 128 divisors (see below), whose sum is σ = 973248000. Its totient is φ = 92461824.

The previous prime is 328711987. The next prime is 328711993. The reversal of 328711992 is 299117823.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328711993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 600663 + ... + 601209.

It is an arithmetic number, because the mean of its divisors is an integer number (7603500).

Almost surely, 2^328711992 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 328711992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486624000).

328711992 is an abundant number, since it is smaller than the sum of its proper divisors (644536008).

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

328711992 is a wasteful number, since it uses less digits than its factorization.

328711992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 632 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 328711992 is about 18130.4162114387. The cubic root of 328711992 is about 690.1420921399.

The spelling of 328711992 in words is "three hundred twenty-eight million, seven hundred eleven thousand, nine hundred ninety-two".