438826728 has 32 divisors (see below), whose sum is σ = 1097596800. Its totient is φ = 146204928.

The previous prime is 438826723. The next prime is 438826747. The reversal of 438826728 is 827628834.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (438826723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76753 + ... + 82271.

It is an arithmetic number, because the mean of its divisors is an integer number (34299900).

Almost surely, 2^438826728 is an apocalyptic number.

It is an amenable number.

438826728 is an abundant number, since it is smaller than the sum of its proper divisors (658770072).

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

438826728 is a wasteful number, since it uses less digits than its factorization.

438826728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8841 (or 8837 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 438826728 is about 20948.1915209882. The cubic root of 438826728 is about 759.9138452661.

The spelling of 438826728 in words is "four hundred thirty-eight million, eight hundred twenty-six thousand, seven hundred twenty-eight".