144227644 has 18 divisors (see below), whose sum is σ = 277430552. Its totient is φ = 65557800.

The previous prime is 144227597. The next prime is 144227647. The reversal of 144227644 is 446722441.

144227644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×144227644² = 41603226587581472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144227647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148512 + ... + 149479.

Almost surely, 2^144227644 is an apocalyptic number.

It is an amenable number.

144227644 is a deficient number, since it is larger than the sum of its proper divisors (133202908).

144227644 is a wasteful number, since it uses less digits than its factorization.

144227644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298017 (or 298004 counting only the distinct ones).

The product of its digits is 43008, while the sum is 34.

The square root of 144227644 is about 12009.4814209440. The cubic root of 144227644 is about 524.4243353007.

The spelling of 144227644 in words is "one hundred forty-four million, two hundred twenty-seven thousand, six hundred forty-four".