144281388 has 24 divisors (see below), whose sum is σ = 336853440. Its totient is φ = 48065680.

The previous prime is 144281387. The next prime is 144281437. The reversal of 144281388 is 883182441.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (144281387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33223 + ... + 37313.

It is an arithmetic number, because the mean of its divisors is an integer number (14035560).

Almost surely, 2^144281388 is an apocalyptic number.

It is an amenable number.

144281388 is an abundant number, since it is smaller than the sum of its proper divisors (192572052).

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

144281388 is a wasteful number, since it uses less digits than its factorization.

144281388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037 (or 7035 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 144281388 is about 12011.7187779268. The cubic root of 144281388 is about 524.4894665071.

The spelling of 144281388 in words is "one hundred forty-four million, two hundred eighty-one thousand, three hundred eighty-eight".