6381328 has 10 divisors (see below), whose sum is σ = 12363854. Its totient is φ = 3190656.

The previous prime is 6381317. The next prime is 6381337. The reversal of 6381328 is 8231836.

It can be written as a sum of positive squares in only one way, i.e., 4443664 + 1937664 = 2108^2 + 1392^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6381328.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199401 + ... + 199432.

Almost surely, 2^6381328 is an apocalyptic number.

It is an amenable number.

6381328 is a deficient number, since it is larger than the sum of its proper divisors (5982526).

6381328 is a wasteful number, since it uses less digits than its factorization.

6381328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398841 (or 398835 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 6381328 is about 2526.1290545022. The cubic root of 6381328 is about 185.4828196613.

The spelling of 6381328 in words is "six million, three hundred eighty-one thousand, three hundred twenty-eight".