1224704 has 52 divisors (see below), whose sum is σ = 2752176. Its totient is φ = 540672.

The previous prime is 1224703. The next prime is 1224709. The reversal of 1224704 is 4074221.

It is a tau number, because it is divible by the number of its divisors (52).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53237 + ... + 53259.

2^1224704 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 1224704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376088).

1224704 is an abundant number, since it is smaller than the sum of its proper divisors (1527472).

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

1224704 is an equidigital number, since it uses as much as digits as its factorization.

1224704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1224704 is about 1106.6634538106. The cubic root of 1224704 is about 106.9901292318.

Adding to 1224704 its reverse (4074221), we get a palindrome (5298925).

The spelling of 1224704 in words is "one million, two hundred twenty-four thousand, seven hundred four".