38503638 has 12 divisors (see below), whose sum is σ = 83424588. Its totient is φ = 12834540.

The previous prime is 38503607. The next prime is 38503667. The reversal of 38503638 is 83630583.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1069528 + ... + 1069563.

It is an arithmetic number, because the mean of its divisors is an integer number (6952049).

Almost surely, 2^38503638 is an apocalyptic number.

38503638 is an abundant number, since it is smaller than the sum of its proper divisors (44920950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38503638 is a wasteful number, since it uses less digits than its factorization.

38503638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139099 (or 2139096 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 38503638 is about 6205.1299744647. The cubic root of 38503638 is about 337.6763062375.

The spelling of 38503638 in words is "thirty-eight million, five hundred three thousand, six hundred thirty-eight".