328731192 has 72 divisors (see below), whose sum is σ = 920153520. Its totient is φ = 106020000.

The previous prime is 328731133. The next prime is 328731197. The reversal of 328731192 is 291137823.

328731192 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328731197) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 66817 + ... + 71567.

It is an arithmetic number, because the mean of its divisors is an integer number (12779910).

Almost surely, 2^328731192 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 328731192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460076760).

328731192 is an abundant number, since it is smaller than the sum of its proper divisors (591422328).

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

328731192 is a wasteful number, since it uses less digits than its factorization.

328731192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825 (or 4787 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 328731192 is about 18130.9457006522. The cubic root of 328731192 is about 690.1555288977.

The spelling of 328731192 in words is "three hundred twenty-eight million, seven hundred thirty-one thousand, one hundred ninety-two".