1224738 has 12 divisors (see below), whose sum is σ = 2653638. Its totient is φ = 408240.

The previous prime is 1224709. The next prime is 1224739. The reversal of 1224738 is 8374221.

It can be written as a sum of positive squares in only one way, i.e., 710649 + 514089 = 843^2 + 717^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34003 + ... + 34038.

2^1224738 is an apocalyptic number.

1224738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1224738 is an abundant number, since it is smaller than the sum of its proper divisors (1428900).

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

1224738 is a wasteful number, since it uses less digits than its factorization.

1224738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68049 (or 68046 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1224738 is about 1106.6788151944. The cubic root of 1224738 is about 106.9911193025.

Adding to 1224738 its reverse (8374221), we get a palindrome (9598959).

The spelling of 1224738 in words is "one million, two hundred twenty-four thousand, seven hundred thirty-eight".