144404224 has 72 divisors (see below), whose sum is σ = 304637760. Its totient is φ = 68210688.

The previous prime is 144404219. The next prime is 144404233. The reversal of 144404224 is 422404441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393289 + ... + 393655.

It is an arithmetic number, because the mean of its divisors is an integer number (4231080).

Almost surely, 2^144404224 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 144404224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152318880).

144404224 is an abundant number, since it is smaller than the sum of its proper divisors (160233536).

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

144404224 is an equidigital number, since it uses as much as digits as its factorization.

144404224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 144404224 is about 12016.8308634182. The cubic root of 144404224 is about 524.6382681284.

Adding to 144404224 its reverse (422404441), we get a palindrome (566808665).

The spelling of 144404224 in words is "one hundred forty-four million, four hundred four thousand, two hundred twenty-four".