4424544 has 72 divisors (see below), whose sum is σ = 13071240. Its totient is φ = 1472256.

The previous prime is 4424531. The next prime is 4424561. The reversal of 4424544 is 4454244.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7492 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (181545).

Almost surely, 2^4424544 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 4424544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6535620).

4424544 is an abundant number, since it is smaller than the sum of its proper divisors (8646696).

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

4424544 is an equidigital number, since it uses as much as digits as its factorization.

4424544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 574 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 4424544 is about 2103.4600067508. The cubic root of 4424544 is about 164.1683775349.

Adding to 4424544 its reverse (4454244), we get a palindrome (8878788).

The spelling of 4424544 in words is "four million, four hundred twenty-four thousand, five hundred forty-four".