38387438 has 16 divisors (see below), whose sum is σ = 59076864. Its totient is φ = 18699000.

The previous prime is 38387431. The next prime is 38387471. The reversal of 38387438 is 83478383.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38387431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22781 + ... + 24407.

It is an arithmetic number, because the mean of its divisors is an integer number (3692304).

Almost surely, 2^38387438 is an apocalyptic number.

38387438 is a deficient number, since it is larger than the sum of its proper divisors (20689426).

38387438 is a wasteful number, since it uses less digits than its factorization.

38387438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927.

The product of its digits is 387072, while the sum is 44.

The square root of 38387438 is about 6195.7596790063. The cubic root of 38387438 is about 337.3362732155.

The spelling of 38387438 in words is "thirty-eight million, three hundred eighty-seven thousand, four hundred thirty-eight".