6393872 has 10 divisors (see below), whose sum is σ = 12388158. Its totient is φ = 3196928.

The previous prime is 6393869. The next prime is 6393911. The reversal of 6393872 is 2783936.

It can be written as a sum of positive squares in only one way, i.e., 5779216 + 614656 = 2404^2 + 784^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199793 + ... + 199824.

Almost surely, 2^6393872 is an apocalyptic number.

It is an amenable number.

6393872 is a deficient number, since it is larger than the sum of its proper divisors (5994286).

6393872 is a wasteful number, since it uses less digits than its factorization.

6393872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399625 (or 399619 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 6393872 is about 2528.6106857324. The cubic root of 6393872 is about 185.6042768039.

The spelling of 6393872 in words is "six million, three hundred ninety-three thousand, eight hundred seventy-two".