4428438 has 32 divisors (see below), whose sum is σ = 10235904. Its totient is φ = 1251072.

The previous prime is 4428433. The next prime is 4428439. The reversal of 4428438 is 8348244.

It is a super-2 number, since 2×4428438² = 39222126239688, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4428399 and 4428408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3531 + ... + 4617.

It is an arithmetic number, because the mean of its divisors is an integer number (319872).

Almost surely, 2^4428438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4428438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5117952).

4428438 is an abundant number, since it is smaller than the sum of its proper divisors (5807466).

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

4428438 is a wasteful number, since it uses less digits than its factorization.

4428438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its digits is 24576, while the sum is 33.

The square root of 4428438 is about 2104.3854209721. The cubic root of 4428438 is about 164.2165244336.

It can be divided in two parts, 44 and 28438, that added together give a palindrome (28482).

The spelling of 4428438 in words is "four million, four hundred twenty-eight thousand, four hundred thirty-eight".