144865224 has 96 divisors (see below), whose sum is σ = 467925120. Its totient is φ = 39587328.

The previous prime is 144865219. The next prime is 144865229. The reversal of 144865224 is 422568441.

It is an interprime number because it is at equal distance from previous prime (144865219) and next prime (144865229).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (144865229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5344 + ... + 17840.

It is an arithmetic number, because the mean of its divisors is an integer number (4874220).

Almost surely, 2^144865224 is an apocalyptic number.

144865224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144865224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233962560).

144865224 is an abundant number, since it is smaller than the sum of its proper divisors (323059896).

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

144865224 is a wasteful number, since it uses less digits than its factorization.

144865224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12539 (or 12532 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 144865224 is about 12035.9970089727. The cubic root of 144865224 is about 525.1959649390.

The spelling of 144865224 in words is "one hundred forty-four million, eight hundred sixty-five thousand, two hundred twenty-four".