1220243344 has 20 divisors (see below), whose sum is σ = 2365049520. Its totient is φ = 609908000.

The previous prime is 1220243309. The next prime is 1220243347. The reversal of 1220243344 is 4433420221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1220243347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40287 + ... + 63745.

It is an arithmetic number, because the mean of its divisors is an integer number (118252476).

Almost surely, 2^1220243344 is an apocalyptic number.

It is an amenable number.

1220243344 is a deficient number, since it is larger than the sum of its proper divisors (1144806176).

1220243344 is a wasteful number, since it uses less digits than its factorization.

1220243344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26718 (or 26712 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1220243344 is about 34931.9816786852. The cubic root of 1220243344 is about 1068.6007692233.

Adding to 1220243344 its reverse (4433420221), we get a palindrome (5653663565).

The spelling of 1220243344 in words is "one billion, two hundred twenty million, two hundred forty-three thousand, three hundred forty-four".