144039928 has 8 divisors (see below), whose sum is σ = 270074880. Its totient is φ = 72019960.

The previous prime is 144039923. The next prime is 144039941. The reversal of 144039928 is 829930441.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144039923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9002488 + ... + 9002503.

It is an arithmetic number, because the mean of its divisors is an integer number (33759360).

Almost surely, 2^144039928 is an apocalyptic number.

It is an amenable number.

144039928 is a deficient number, since it is larger than the sum of its proper divisors (126034952).

144039928 is a wasteful number, since it uses less digits than its factorization.

144039928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18004997 (or 18004993 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 144039928 is about 12001.6635513582. The cubic root of 144039928 is about 524.1967192549.

The spelling of 144039928 in words is "one hundred forty-four million, thirty-nine thousand, nine hundred twenty-eight".