6438748 has 12 divisors (see below), whose sum is σ = 11326392. Its totient is φ = 3202640.

The previous prime is 6438721. The next prime is 6438749. The reversal of 6438748 is 8478346.

It is a self number, because there is not a number n which added to its sum of digits gives 6438748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3298 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (943866).

Almost surely, 2^6438748 is an apocalyptic number.

It is an amenable number.

6438748 is a deficient number, since it is larger than the sum of its proper divisors (4887644).

6438748 is a wasteful number, since it uses less digits than its factorization.

6438748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372 (or 8370 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 6438748 is about 2537.4688175424. The cubic root of 6438748 is about 186.0374919605.

The spelling of 6438748 in words is "six million, four hundred thirty-eight thousand, seven hundred forty-eight".