4423428 has 72 divisors (see below), whose sum is σ = 12230400. Its totient is φ = 1342656.

The previous prime is 4423427. The next prime is 4423481. The reversal of 4423428 is 8243244.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4423423) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19725 + ... + 19947.

Almost surely, 2^4423428 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 4423428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6115200).

4423428 is an abundant number, since it is smaller than the sum of its proper divisors (7806972).

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

4423428 is a wasteful number, since it uses less digits than its factorization.

4423428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 276 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 4423428 is about 2103.1947128119. The cubic root of 4423428 is about 164.1545736781.

It can be divided in two parts, 4423 and 428, that added together give a triangular number (4851 = T₉₈).

The spelling of 4423428 in words is "four million, four hundred twenty-three thousand, four hundred twenty-eight".