7638448 has 20 divisors (see below), whose sum is σ = 14842800. Its totient is φ = 3808064.

The previous prime is 7638403. The next prime is 7638473. The reversal of 7638448 is 8448367.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7638448.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9186 + ... + 9982.

It is an arithmetic number, because the mean of its divisors is an integer number (742140).

Almost surely, 2^7638448 is an apocalyptic number.

It is an amenable number.

7638448 is a deficient number, since it is larger than the sum of its proper divisors (7204352).

7638448 is a wasteful number, since it uses less digits than its factorization.

7638448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1398 counting only the distinct ones).

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

The square root of 7638448 is about 2763.7742310109. The cubic root of 7638448 is about 196.9405027022.

The spelling of 7638448 in words is "seven million, six hundred thirty-eight thousand, four hundred forty-eight".