328028140 has 48 divisors (see below), whose sum is σ = 753611040. Its totient is φ = 118945280.

The previous prime is 328028131. The next prime is 328028147. The reversal of 328028140 is 41820823.

It is a junction number, because it is equal to n+sod(n) for n = 328028099 and 328028108.

It is not an unprimeable number, because it can be changed into a prime (328028147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83664 + ... + 87496.

It is an arithmetic number, because the mean of its divisors is an integer number (15700230).

Almost surely, 2^328028140 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 328028140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376805520).

328028140 is an abundant number, since it is smaller than the sum of its proper divisors (425582900).

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

328028140 is a wasteful number, since it uses less digits than its factorization.

328028140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242 (or 4240 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 328028140 is about 18111.5471453987. The cubic root of 328028140 is about 689.6631696331.

Adding to 328028140 its reverse (41820823), we get a palindrome (369848963).

The spelling of 328028140 in words is "three hundred twenty-eight million, twenty-eight thousand, one hundred forty".