144871440 has 240 divisors, whose sum is σ = 531965952. Its totient is φ = 32514048.

The previous prime is 144871423. The next prime is 144871469. The reversal of 144871440 is 44178441.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1140657 + ... + 1140783.

Almost surely, 2^144871440 is an apocalyptic number.

144871440 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 144871440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265982976).

144871440 is an abundant number, since it is smaller than the sum of its proper divisors (387094512).

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

144871440 is a wasteful number, since it uses less digits than its factorization.

144871440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 144871440 is about 12036.2552315909. The cubic root of 144871440 is about 525.2034766830.

The spelling of 144871440 in words is "one hundred forty-four million, eight hundred seventy-one thousand, four hundred forty".