144221344 has 12 divisors (see below), whose sum is σ = 283935834. Its totient is φ = 72110656.

The previous prime is 144221317. The next prime is 144221359. The reversal of 144221344 is 443122441.

It can be written as a sum of positive squares in only one way, i.e., 130233744 + 13987600 = 11412^2 + 3740^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2253427 + ... + 2253490.

Almost surely, 2^144221344 is an apocalyptic number.

It is an amenable number.

144221344 is a deficient number, since it is larger than the sum of its proper divisors (139714490).

144221344 is an equidigital number, since it uses as much as digits as its factorization.

144221344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506927 (or 4506919 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 144221344 is about 12009.2191253220. The cubic root of 144221344 is about 524.4166994057.

Adding to 144221344 its reverse (443122441), we get a palindrome (587343785).

The spelling of 144221344 in words is "one hundred forty-four million, two hundred twenty-one thousand, three hundred forty-four".