7228444 has 24 divisors (see below), whose sum is σ = 13028400. Its totient is φ = 3507840.

The previous prime is 7228433. The next prime is 7228447. The reversal of 7228444 is 4448227.

It is a super-2 number, since 2×7228444² = 104500805322272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228447) 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 7 ways as a sum of consecutive naturals, for example, 25584 + ... + 25864.

It is an arithmetic number, because the mean of its divisors is an integer number (542850).

Almost surely, 2^7228444 is an apocalyptic number.

It is an amenable number.

7228444 is a deficient number, since it is larger than the sum of its proper divisors (5799956).

7228444 is a wasteful number, since it uses less digits than its factorization.

7228444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 451 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 7228444 is about 2688.5765750672. The cubic root of 7228444 is about 193.3518241001.

The spelling of 7228444 in words is "seven million, two hundred twenty-eight thousand, four hundred forty-four".