38457638 has 16 divisors (see below), whose sum is σ = 61293024. Its totient is φ = 18034560.

The previous prime is 38457611. The next prime is 38457649. The reversal of 38457638 is 83675483.

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, 8756 + ... + 12392.

It is an arithmetic number, because the mean of its divisors is an integer number (3830814).

Almost surely, 2^38457638 is an apocalyptic number.

38457638 is a deficient number, since it is larger than the sum of its proper divisors (22835386).

38457638 is a wasteful number, since it uses less digits than its factorization.

38457638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967.

The product of its digits is 483840, while the sum is 44.

The square root of 38457638 is about 6201.4222562248. The cubic root of 38457638 is about 337.5417795558.

The spelling of 38457638 in words is "thirty-eight million, four hundred fifty-seven thousand, six hundred thirty-eight".