387638 has 12 divisors (see below), whose sum is σ = 618180. Its totient is φ = 181800.

The previous prime is 387631. The next prime is 387641. The reversal of 387638 is 836783.

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

It is a junction number, because it is equal to n+sod(n) for n = 387598 and 387607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387631) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3788 + ... + 3888.

It is an arithmetic number, because the mean of its divisors is an integer number (51515).

2³⁸⁷⁶³⁸ is an apocalyptic number.

387638 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

387638 is a deficient number, since it is larger than the sum of its proper divisors (230542).

387638 is a wasteful number, since it uses less digits than its factorization.

387638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 122 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 387638 is about 622.6058142999. The cubic root of 387638 is about 72.9136402916.

The spelling of 387638 in words is "three hundred eighty-seven thousand, six hundred thirty-eight".