1224306644 has 24 divisors (see below), whose sum is σ = 2338199136. Its totient is φ = 556292000.

The previous prime is 1224306631. The next prime is 1224306647. The reversal of 1224306644 is 4466034221.

It is a self number, because there is not a number n which added to its sum of digits gives 1224306644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224306647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224834 + ... + 230214.

It is an arithmetic number, because the mean of its divisors is an integer number (97424964).

Almost surely, 2^1224306644 is an apocalyptic number.

It is an amenable number.

1224306644 is a deficient number, since it is larger than the sum of its proper divisors (1113892492).

1224306644 is a wasteful number, since it uses less digits than its factorization.

1224306644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10567 (or 10565 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 1224306644 is about 34990.0935123072. The cubic root of 1224306644 is about 1069.7855697479.

The spelling of 1224306644 in words is "one billion, two hundred twenty-four million, three hundred six thousand, six hundred forty-four".