1224445672 has 16 divisors (see below), whose sum is σ = 2430885060. Its totient is φ = 576209664.

The previous prime is 1224445667. The next prime is 1224445679. The reversal of 1224445672 is 2765444221.

It can be written as a sum of positive squares in 2 ways, for example, as 1131245956 + 93199716 = 33634^2 + 9654^2 .

It is not an unprimeable number, because it can be changed into a prime (1224445679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4501503 + ... + 4501774.

Almost surely, 2^1224445672 is an apocalyptic number.

It is an amenable number.

1224445672 is a deficient number, since it is larger than the sum of its proper divisors (1206439388).

1224445672 is a wasteful number, since it uses less digits than its factorization.

1224445672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9003300 (or 9003296 counting only the distinct ones).

The product of its digits is 107520, while the sum is 37.

The square root of 1224445672 is about 34992.0801325100. The cubic root of 1224445672 is about 1069.8260619234.

Adding to 1224445672 its reverse (2765444221), we get a palindrome (3989889893).

The spelling of 1224445672 in words is "one billion, two hundred twenty-four million, four hundred forty-five thousand, six hundred seventy-two".