1224404144 has 20 divisors (see below), whose sum is σ = 2422758624. Its totient is φ = 599176128.

The previous prime is 1224404143. The next prime is 1224404161. The reversal of 1224404144 is 4414044221.

It is not an unprimeable number, because it can be changed into a prime (1224404143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813347 + ... + 814850.

Almost surely, 2^1224404144 is an apocalyptic number.

It is an amenable number.

1224404144 is a deficient number, since it is larger than the sum of its proper divisors (1198354480).

1224404144 is a wasteful number, since it uses less digits than its factorization.

1224404144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628252 (or 1628246 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 1224404144 is about 34991.4867360620. The cubic root of 1224404144 is about 1069.8139671337.

Adding to 1224404144 its reverse (4414044221), we get a palindrome (5638448365).

The spelling of 1224404144 in words is "one billion, two hundred twenty-four million, four hundred four thousand, one hundred forty-four".