4038816 has 24 divisors (see below), whose sum is σ = 10602144. Its totient is φ = 1346240.

The previous prime is 4038803. The next prime is 4038817. The reversal of 4038816 is 6188304.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (4038817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20940 + ... + 21131.

It is an arithmetic number, because the mean of its divisors is an integer number (441756).

Almost surely, 2^4038816 is an apocalyptic number.

It is an amenable number.

4038816 is an abundant number, since it is smaller than the sum of its proper divisors (6563328).

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

4038816 is a wasteful number, since it uses less digits than its factorization.

4038816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42084 (or 42076 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 4038816 is about 2009.6805716332. The cubic root of 4038816 is about 159.2519245118.

It can be divided in two parts, 40388 and 16, that added together give a palindrome (40404).

The spelling of 4038816 in words is "four million, thirty-eight thousand, eight hundred sixteen".