38665216 has 44 divisors (see below), whose sum is σ = 78686680. Its totient is φ = 18984960.

The previous prime is 38665189. The next prime is 38665229. The reversal of 38665216 is 61256683.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 62155 + ... + 62773.

Almost surely, 2^38665216 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 38665216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39343340).

38665216 is an abundant number, since it is smaller than the sum of its proper divisors (40021464).

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

38665216 is an equidigital number, since it uses as much as digits as its factorization.

38665216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 682 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 38665216 is about 6218.1360551213. The cubic root of 38665216 is about 338.1479925666.

The spelling of 38665216 in words is "thirty-eight million, six hundred sixty-five thousand, two hundred sixteen".