144781144 has 16 divisors (see below), whose sum is σ = 271878120. Its totient is φ = 72280320.

The previous prime is 144781139. The next prime is 144781157. The reversal of 144781144 is 441187441.

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, 8062 + ... + 18829.

Almost surely, 2^144781144 is an apocalyptic number.

It is an amenable number.

144781144 is a deficient number, since it is larger than the sum of its proper divisors (127096976).

144781144 is a wasteful number, since it uses less digits than its factorization.

144781144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27570 (or 27566 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 144781144 is about 12032.5036463739. The cubic root of 144781144 is about 525.0943370914.

The spelling of 144781144 in words is "one hundred forty-four million, seven hundred eighty-one thousand, one hundred forty-four".