1224444 has 48 divisors (see below), whose sum is σ = 3161088. Its totient is φ = 366528.

The previous prime is 1224439. The next prime is 1224473. The reversal of 1224444 is 4444221.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1224444.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7249 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (65856).

2^1224444 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 1224444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580544).

1224444 is an abundant number, since it is smaller than the sum of its proper divisors (1936644).

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

1224444 is a wasteful number, since it uses less digits than its factorization.

1224444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 232 counting only the distinct ones).

The product of its digits is 1024, while the sum is 21.

The square root of 1224444 is about 1106.5459773548. The cubic root of 1224444 is about 106.9825574968.

Adding to 1224444 its reverse (4444221), we get a palindrome (5668665).

The spelling of 1224444 in words is "one million, two hundred twenty-four thousand, four hundred forty-four".