38281216 has 28 divisors (see below), whose sum is σ = 76574142. Its totient is φ = 19136512.

The previous prime is 38281169. The next prime is 38281231. The reversal of 38281216 is 61218283.

It can be written as a sum of positive squares in only one way, i.e., 23040000 + 15241216 = 4800^2 + 3904^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5856 + ... + 10528.

Almost surely, 2^38281216 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 38281216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38287071).

38281216 is an abundant number, since it is smaller than the sum of its proper divisors (38292926).

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

38281216 is an frugal number, since it uses more digits than its factorization.

38281216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699 (or 4675 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 38281216 is about 6187.1815877668. The cubic root of 38281216 is about 337.0248376942.

Adding to 38281216 its reverse (61218283), we get a palindrome (99499499).

The spelling of 38281216 in words is "thirty-eight million, two hundred eighty-one thousand, two hundred sixteen".