7444224 has 90 divisors (see below), whose sum is σ = 22259160. Its totient is φ = 2474496.

The previous prime is 7444223. The next prime is 7444231. The reversal of 7444224 is 4224447.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7444223) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20557 + ... + 20915.

It is an arithmetic number, because the mean of its divisors is an integer number (247324).

Almost surely, 2^7444224 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 7444224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11129580).

7444224 is an abundant number, since it is smaller than the sum of its proper divisors (14814936).

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

7444224 is an equidigital number, since it uses as much as digits as its factorization.

7444224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 364 counting only the distinct ones).

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

The square root of 7444224 is about 2728.4105262955. The cubic root of 7444224 is about 195.2569394047.

The spelling of 7444224 in words is "seven million, four hundred forty-four thousand, two hundred twenty-four".