1224647944 has 16 divisors (see below), whose sum is σ = 2472847020. Its totient is φ = 565222080.

The previous prime is 1224647929. The next prime is 1224647951. The reversal of 1224647944 is 4497464221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1069944100 + 154703844 = 32710^2 + 12438^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1224647944.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5887627 + ... + 5887834.

Almost surely, 2^1224647944 is an apocalyptic number.

It is an amenable number.

1224647944 is an abundant number, since it is smaller than the sum of its proper divisors (1248199076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1224647944 is a wasteful number, since it uses less digits than its factorization.

1224647944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11775480 (or 11775476 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 1224647944 is about 34994.9702671684. The cubic root of 1224647944 is about 1069.8849685638.

The spelling of 1224647944 in words is "one billion, two hundred twenty-four million, six hundred forty-seven thousand, nine hundred forty-four".