38408638 has 8 divisors (see below), whose sum is σ = 57715920. Its totient is φ = 19170000.

The previous prime is 38408611. The next prime is 38408647. The reversal of 38408638 is 83680483.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 38408638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15738 + ... + 18013.

It is an arithmetic number, because the mean of its divisors is an integer number (7214490).

Almost surely, 2^38408638 is an apocalyptic number.

38408638 is a deficient number, since it is larger than the sum of its proper divisors (19307282).

38408638 is a wasteful number, since it uses less digits than its factorization.

38408638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34322.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 38408638 is about 6197.4702903685. The cubic root of 38408638 is about 337.3983613469.

The spelling of 38408638 in words is "thirty-eight million, four hundred eight thousand, six hundred thirty-eight".