38648816 has 40 divisors (see below), whose sum is σ = 78518784. Its totient is φ = 18406080.

The previous prime is 38648791. The next prime is 38648821. The reversal of 38648816 is 61884683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32651 + ... + 33813.

Almost surely, 2^38648816 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 38648816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39259392).

38648816 is an abundant number, since it is smaller than the sum of its proper divisors (39869968).

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

38648816 is a wasteful number, since it uses less digits than its factorization.

38648816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1263 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 38648816 is about 6216.8171921008. The cubic root of 38648816 is about 338.1001768819.

The spelling of 38648816 in words is "thirty-eight million, six hundred forty-eight thousand, eight hundred sixteen".