144745728 has 144 divisors (see below), whose sum is σ = 408636480. Its totient is φ = 45416448.

The previous prime is 144745673. The next prime is 144745729. The reversal of 144745728 is 827547441.

It is a self number, because there is not a number n which added to its sum of digits gives 144745728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144745729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1492176 + ... + 1492272.

Almost surely, 2^144745728 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 144745728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204318240).

144745728 is an abundant number, since it is smaller than the sum of its proper divisors (263890752).

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

144745728 is an equidigital number, since it uses as much as digits as its factorization.

144745728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 198 counting only the distinct ones).

The product of its digits is 250880, while the sum is 42.

The square root of 144745728 is about 12031.0318759448. The cubic root of 144745728 is about 525.0515178469.

It can be divided in two parts, 14474 and 5728, that added together give a palindrome (20202).

The spelling of 144745728 in words is "one hundred forty-four million, seven hundred forty-five thousand, seven hundred twenty-eight".