8744428 has 72 divisors (see below), whose sum is σ = 20109600. Its totient is φ = 3252480.

The previous prime is 8744423. The next prime is 8744447. The reversal of 8744428 is 8244478.

8744428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (8744423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98208 + ... + 98296.

It is an arithmetic number, because the mean of its divisors is an integer number (279300).

Almost surely, 2^8744428 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 8744428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10054800).

8744428 is an abundant number, since it is smaller than the sum of its proper divisors (11365172).

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

8744428 is a wasteful number, since it uses less digits than its factorization.

8744428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 138 counting only the distinct ones).

The product of its digits is 57344, while the sum is 37.

The square root of 8744428 is about 2957.0979016597. The cubic root of 8744428 is about 206.0205151278.

The spelling of 8744428 in words is "eight million, seven hundred forty-four thousand, four hundred twenty-eight".