38689636 has 6 divisors (see below), whose sum is σ = 67706870. Its totient is φ = 19344816.

The previous prime is 38689633. The next prime is 38689639. The reversal of 38689636 is 63698683.

38689636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38689633) and next prime (38689639).

It can be written as a sum of positive squares in only one way, i.e., 37748736 + 940900 = 6144^2 + 970^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38689636.

It is not an unprimeable number, because it can be changed into a prime (38689633) 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 as a sum of consecutive naturals, namely, 4836201 + ... + 4836208.

Almost surely, 2^38689636 is an apocalyptic number.

It is an amenable number.

38689636 is a deficient number, since it is larger than the sum of its proper divisors (29017234).

38689636 is a wasteful number, since it uses less digits than its factorization.

38689636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9672413 (or 9672411 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The square root of 38689636 is about 6220.0993561196. The cubic root of 38689636 is about 338.2191662382.

The spelling of 38689636 in words is "thirty-eight million, six hundred eighty-nine thousand, six hundred thirty-six".