1224315772 has 12 divisors (see below), whose sum is σ = 2169674080. Its totient is φ = 604408896.

The previous prime is 1224315751. The next prime is 1224315779. The reversal of 1224315772 is 2775134221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224315779) 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, 1936893 + ... + 1937524.

Almost surely, 2^1224315772 is an apocalyptic number.

It is an amenable number.

1224315772 is a deficient number, since it is larger than the sum of its proper divisors (945358308).

1224315772 is a wasteful number, since it uses less digits than its factorization.

1224315772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874500 (or 3874498 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 1224315772 is about 34990.2239489832. The cubic root of 1224315772 is about 1069.7882283897.

Adding to 1224315772 its reverse (2775134221), we get a palindrome (3999449993).

The spelling of 1224315772 in words is "one billion, two hundred twenty-four million, three hundred fifteen thousand, seven hundred seventy-two".