1244045568 has 72 divisors (see below), whose sum is σ = 3316578048. Its totient is φ = 413980672.

The previous prime is 1244045563. The next prime is 1244045591. The reversal of 1244045568 is 8655404421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1244045563) 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, 661846 + ... + 663722.

It is an arithmetic number, because the mean of its divisors is an integer number (46063584).

Almost surely, 2^1244045568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244045568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658289024).

1244045568 is an abundant number, since it is smaller than the sum of its proper divisors (2072532480).

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

1244045568 is an equidigital number, since it uses as much as digits as its factorization.

1244045568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 39.

The square root of 1244045568 is about 35271.0301522368. The cubic root of 1244045568 is about 1075.5041638760.

Adding to 1244045568 its reverse (8655404421), we get a palindrome (9899449989).

The spelling of 1244045568 in words is "one billion, two hundred forty-four million, forty-five thousand, five hundred sixty-eight".