8381328 has 40 divisors (see below), whose sum is σ = 21763488. Its totient is φ = 2779392.

The previous prime is 8381311. The next prime is 8381333. The reversal of 8381328 is 8231838.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13276 + ... + 13892.

Almost surely, 2^8381328 is an apocalyptic number.

It is an amenable number.

8381328 is an abundant number, since it is smaller than the sum of its proper divisors (13382160).

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

8381328 is a wasteful number, since it uses less digits than its factorization.

8381328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 905 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 8381328 is about 2895.0523311332. The cubic root of 8381328 is about 203.1285393624.

The spelling of 8381328 in words is "eight million, three hundred eighty-one thousand, three hundred twenty-eight".