144445040 has 40 divisors (see below), whose sum is σ = 344918400. Its totient is φ = 56215296.

The previous prime is 144445033. The next prime is 144445043. The reversal of 144445040 is 40544441.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144445043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21440 + ... + 27359.

It is an arithmetic number, because the mean of its divisors is an integer number (8622960).

Almost surely, 2^144445040 is an apocalyptic number.

144445040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144445040 is an abundant number, since it is smaller than the sum of its proper divisors (200473360).

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

144445040 is a wasteful number, since it uses less digits than its factorization.

144445040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48849 (or 48843 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 144445040 is about 12018.5290281299. The cubic root of 144445040 is about 524.6876933177.

Adding to 144445040 its reverse (40544441), we get a palindrome (184989481).

The spelling of 144445040 in words is "one hundred forty-four million, four hundred forty-five thousand, forty".