38390016 has 144 divisors (see below), whose sum is σ = 120546944. Its totient is φ = 10616832.

The previous prime is 38389991. The next prime is 38390017. The reversal of 38390016 is 61009383.

It is not an unprimeable number, because it can be changed into a prime (38390017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198816 + ... + 199008.

Almost surely, 2^38390016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38390016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60273472).

38390016 is an abundant number, since it is smaller than the sum of its proper divisors (82156928).

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

38390016 is a wasteful number, since it uses less digits than its factorization.

38390016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 38390016 is about 6195.9677210263. The cubic root of 38390016 is about 337.3438245872.

Adding to 38390016 its reverse (61009383), we get a palindrome (99399399).

The spelling of 38390016 in words is "thirty-eight million, three hundred ninety thousand, sixteen".