6438228 has 36 divisors (see below), whose sum is σ = 15391488. Its totient is φ = 2094560.

The previous prime is 6438199. The next prime is 6438241. The reversal of 6438228 is 8228346.

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 11 ways as a sum of consecutive naturals, for example, 33613 + ... + 33803.

Almost surely, 2^6438228 is an apocalyptic number.

It is an amenable number.

6438228 is an abundant number, since it is smaller than the sum of its proper divisors (8953260).

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

6438228 is a wasteful number, since it uses less digits than its factorization.

6438228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 249 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 6438228 is about 2537.3663511602. The cubic root of 6438228 is about 186.0324836317.

It can be divided in two parts, 6438 and 228, that added together give a palindrome (6666).

The spelling of 6438228 in words is "six million, four hundred thirty-eight thousand, two hundred twenty-eight".