38915644 has 12 divisors (see below), whose sum is σ = 68446000. Its totient is φ = 19359648.

The previous prime is 38915641. The next prime is 38915647. The reversal of 38915644 is 44651983.

38915644 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 (38915641) and next prime (38915647).

It is a junction number, because it is equal to n+sod(n) for n = 38915597 and 38915606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38915641) 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, 23649 + ... + 25240.

Almost surely, 2^38915644 is an apocalyptic number.

It is an amenable number.

38915644 is a deficient number, since it is larger than the sum of its proper divisors (29530356).

38915644 is a wasteful number, since it uses less digits than its factorization.

38915644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49092 (or 49090 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 38915644 is about 6238.2404570520. The cubic root of 38915644 is about 338.8764643578.

The spelling of 38915644 in words is "thirty-eight million, nine hundred fifteen thousand, six hundred forty-four".