7381328 has 10 divisors (see below), whose sum is σ = 14301354. Its totient is φ = 3690656.

The previous prime is 7381301. The next prime is 7381343. The reversal of 7381328 is 8231837.

It can be written as a sum of positive squares in only one way, i.e., 6512704 + 868624 = 2552^2 + 932^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7381294 and 7381303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230651 + ... + 230682.

Almost surely, 2^7381328 is an apocalyptic number.

It is an amenable number.

7381328 is a deficient number, since it is larger than the sum of its proper divisors (6920026).

7381328 is a wasteful number, since it uses less digits than its factorization.

7381328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461341 (or 461335 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 7381328 is about 2716.8599522243. The cubic root of 7381328 is about 194.7054769266.

The spelling of 7381328 in words is "seven million, three hundred eighty-one thousand, three hundred twenty-eight".