1224224272 has 10 divisors (see below), whose sum is σ = 2371934558. Its totient is φ = 612112128.

The previous prime is 1224224257. The next prime is 1224224303. The reversal of 1224224272 is 2724224221.

It can be written as a sum of positive squares in only one way, i.e., 891380736 + 332843536 = 29856^2 + 18244^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1224224272.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38256993 + ... + 38257024.

Almost surely, 2^1224224272 is an apocalyptic number.

It is an amenable number.

1224224272 is a deficient number, since it is larger than the sum of its proper divisors (1147710286).

1224224272 is an equidigital number, since it uses as much as digits as its factorization.

1224224272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76514025 (or 76514019 counting only the distinct ones).

The product of its digits is 7168, while the sum is 28.

The square root of 1224224272 is about 34988.9164164882. The cubic root of 1224224272 is about 1069.7615772964.

Adding to 1224224272 its reverse (2724224221), we get a palindrome (3948448493).

The spelling of 1224224272 in words is "one billion, two hundred twenty-four million, two hundred twenty-four thousand, two hundred seventy-two".