4744224 has 144 divisors (see below), whose sum is σ = 15472800. Its totient is φ = 1410048.

The previous prime is 4744219. The next prime is 4744237. The reversal of 4744224 is 4224474.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×4744224² = 45015322724352, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249687 + ... + 249705.

It is an arithmetic number, because the mean of its divisors is an integer number (107450).

Almost surely, 2^4744224 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 4744224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7736400).

4744224 is an abundant number, since it is smaller than the sum of its proper divisors (10728576).

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

4744224 is a wasteful number, since it uses less digits than its factorization.

4744224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 41 counting only the distinct ones).

The product of its digits is 7168, while the sum is 27.

The square root of 4744224 is about 2178.1239634144. The cubic root of 4744224 is about 168.0306066686.

Adding to 4744224 its reverse (4224474), we get a palindrome (8968698).

The spelling of 4744224 in words is "four million, seven hundred forty-four thousand, two hundred twenty-four".