144181432 has 16 divisors (see below), whose sum is σ = 270667800. Its totient is φ = 72003360.

The previous prime is 144181397. The next prime is 144181447. The reversal of 144181432 is 234181441.

It is a self number, because there is not a number n which added to its sum of digits gives 144181432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3619 + ... + 17362.

Almost surely, 2^144181432 is an apocalyptic number.

It is an amenable number.

144181432 is a deficient number, since it is larger than the sum of its proper divisors (126486368).

144181432 is a wasteful number, since it uses less digits than its factorization.

144181432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21846 (or 21842 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 144181432 is about 12007.5572869756. The cubic root of 144181432 is about 524.3683190255.

Subtracting 144181432 from its reverse (234181441), we obtain a palindrome (90000009).

The spelling of 144181432 in words is "one hundred forty-four million, one hundred eighty-one thousand, four hundred thirty-two".