38639764 has 24 divisors (see below), whose sum is σ = 70092288. Its totient is φ = 18618720.

The previous prime is 38639719. The next prime is 38639813. The reversal of 38639764 is 46793683.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 38817 + ... + 39799.

It is an arithmetic number, because the mean of its divisors is an integer number (2920512).

Almost surely, 2^38639764 is an apocalyptic number.

It is an amenable number.

38639764 is a deficient number, since it is larger than the sum of its proper divisors (31452524).

38639764 is a wasteful number, since it uses less digits than its factorization.

38639764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1333 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 38639764 is about 6216.0891242002. The cubic root of 38639764 is about 338.0737791628.

The spelling of 38639764 in words is "thirty-eight million, six hundred thirty-nine thousand, seven hundred sixty-four".