1224736 has 12 divisors (see below), whose sum is σ = 2411262. Its totient is φ = 612352.

The previous prime is 1224709. The next prime is 1224739. The reversal of 1224736 is 6374221.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 414736 = 900^2 + 644^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1224736.

It is not an unprimeable number, because it can be changed into a prime (1224739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19105 + ... + 19168.

2^1224736 is an apocalyptic number.

1224736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1224736 is a deficient number, since it is larger than the sum of its proper divisors (1186526).

1224736 is an equidigital number, since it uses as much as digits as its factorization.

1224736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38283 (or 38275 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 1224736 is about 1106.6779115895. The cubic root of 1224736 is about 106.9910610636.

Adding to 1224736 its reverse (6374221), we get a palindrome (7598957).

The spelling of 1224736 in words is "one million, two hundred twenty-four thousand, seven hundred thirty-six".