1224204144 has 40 divisors (see below), whose sum is σ = 3271583760. Its totient is φ = 393996288.

The previous prime is 1224204139. The next prime is 1224204151. The reversal of 1224204144 is 4414024221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438337 + ... + 441120.

It is an arithmetic number, because the mean of its divisors is an integer number (81789594).

Almost surely, 2^1224204144 is an apocalyptic number.

It is an amenable number.

1224204144 is an abundant number, since it is smaller than the sum of its proper divisors (2047379616).

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

1224204144 is a wasteful number, since it uses less digits than its factorization.

1224204144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879497 (or 879491 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1224204144 is about 34988.6287813627. The cubic root of 1224204144 is about 1069.7557144602.

Adding to 1224204144 its reverse (4414024221), we get a palindrome (5638228365).

The spelling of 1224204144 in words is "one billion, two hundred twenty-four million, two hundred four thousand, one hundred forty-four".