144764224 has 56 divisors (see below), whose sum is σ = 318613536. Its totient is φ = 64704000.

The previous prime is 144764219. The next prime is 144764227. The reversal of 144764224 is 422467441.

It is a self number, because there is not a number n which added to its sum of digits gives 144764224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144764227) 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, 41259 + ... + 44629.

Almost surely, 2^144764224 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 144764224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159306768).

144764224 is an abundant number, since it is smaller than the sum of its proper divisors (173849312).

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

144764224 is a wasteful number, since it uses less digits than its factorization.

144764224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455 (or 3445 counting only the distinct ones).

The product of its digits is 43008, while the sum is 34.

The square root of 144764224 is about 12031.8005302615. The cubic root of 144764224 is about 525.0738810613.

The spelling of 144764224 in words is "one hundred forty-four million, seven hundred sixty-four thousand, two hundred twenty-four".