38216816 has 80 divisors (see below), whose sum is σ = 87503328. Its totient is φ = 15974400.

The previous prime is 38216791. The next prime is 38216821. The reversal of 38216816 is 61861283.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158456 + ... + 158696.

Almost surely, 2^38216816 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 38216816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43751664).

38216816 is an abundant number, since it is smaller than the sum of its proper divisors (49286512).

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

38216816 is a wasteful number, since it uses less digits than its factorization.

38216816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 324 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 38216816 is about 6181.9750889178. The cubic root of 38216816 is about 336.8357407583.

The spelling of 38216816 in words is "thirty-eight million, two hundred sixteen thousand, eight hundred sixteen".