144343440 has 240 divisors, whose sum is σ = 519966720. Its totient is φ = 35804160.

The previous prime is 144343429. The next prime is 144343453. The reversal of 144343440 is 44343441.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 647169 + ... + 647391.

It is an arithmetic number, because the mean of its divisors is an integer number (2166528).

Almost surely, 2^144343440 is an apocalyptic number.

144343440 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 144343440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259983360).

144343440 is an abundant number, since it is smaller than the sum of its proper divisors (375623280).

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

144343440 is a wasteful number, since it uses less digits than its factorization.

144343440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 144343440 is about 12014.3014778222. The cubic root of 144343440 is about 524.5646458869.

Adding to 144343440 its reverse (44343441), we get a palindrome (188686881).

Subtracting from 144343440 its reverse (44343441), we obtain a palindrome (99999999).

The spelling of 144343440 in words is "one hundred forty-four million, three hundred forty-three thousand, four hundred forty".