144303440 has 40 divisors (see below), whose sum is σ = 336440520. Its totient is φ = 57560576.

The previous prime is 144303437. The next prime is 144303451. The reversal of 144303440 is 44303441.

It can be written as a sum of positive squares in 4 ways, for example, as 399424 + 143904016 = 632^2 + 11996^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28802 + ... + 33438.

It is an arithmetic number, because the mean of its divisors is an integer number (8411013).

Almost surely, 2^144303440 is an apocalyptic number.

144303440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144303440 is an abundant number, since it is smaller than the sum of its proper divisors (192137080).

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

144303440 is a wasteful number, since it uses less digits than its factorization.

144303440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039 (or 5033 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 144303440 is about 12012.6366797635. The cubic root of 144303440 is about 524.5161861755.

Adding to 144303440 its reverse (44303441), we get a palindrome (188606881).

Subtracting from 144303440 its reverse (44303441), we obtain a palindrome (99999999).

The spelling of 144303440 in words is "one hundred forty-four million, three hundred three thousand, four hundred forty".