7331328 has 120 divisors (see below), whose sum is σ = 22235928. Its totient is φ = 2322432.

The previous prime is 7331323. The next prime is 7331339. The reversal of 7331328 is 8231337.

7331328 is a `hidden beast` number, since 7 + 331 + 328 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7331323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170475 + ... + 170517.

Almost surely, 2^7331328 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 7331328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11117964).

7331328 is an abundant number, since it is smaller than the sum of its proper divisors (14904600).

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

7331328 is a wasteful number, since it uses less digits than its factorization.

7331328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 85 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 7331328 is about 2707.6425170247. The cubic root of 7331328 is about 194.2648453446.

Subtracting 7331328 from its reverse (8231337), we obtain a palindrome (900009).

The spelling of 7331328 in words is "seven million, three hundred thirty-one thousand, three hundred twenty-eight".