144983440 has 80 divisors (see below), whose sum is σ = 387475200. Its totient is φ = 49420800.

The previous prime is 144983417. The next prime is 144983453. The reversal of 144983440 is 44389441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 144983440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110790 + ... + 112090.

It is an arithmetic number, because the mean of its divisors is an integer number (4843440).

Almost surely, 2^144983440 is an apocalyptic number.

144983440 is a gapful number since it is divisible by the number (10) 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 144983440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193737600).

144983440 is an abundant number, since it is smaller than the sum of its proper divisors (242491760).

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

144983440 is a wasteful number, since it uses less digits than its factorization.

144983440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 144983440 is about 12040.9069425853. The cubic root of 144983440 is about 525.3387866223.

The spelling of 144983440 in words is "one hundred forty-four million, nine hundred eighty-three thousand, four hundred forty".