144228928 has 28 divisors (see below), whose sum is σ = 286595820. Its totient is φ = 72015872.

The previous prime is 144228899. The next prime is 144228941. The reversal of 144228928 is 829822441.

It can be written as a sum of positive squares in 2 ways, for example, as 71774784 + 72454144 = 8472^2 + 8512^2 .

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, 75408 + ... + 77296.

It is an arithmetic number, because the mean of its divisors is an integer number (10235565).

Almost surely, 2^144228928 is an apocalyptic number.

It is an amenable number.

144228928 is a deficient number, since it is larger than the sum of its proper divisors (142366892).

144228928 is a wasteful number, since it uses less digits than its factorization.

144228928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094 (or 3084 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 144228928 is about 12009.5348785871. The cubic root of 144228928 is about 524.4258915415.

The spelling of 144228928 in words is "one hundred forty-four million, two hundred twenty-eight thousand, nine hundred twenty-eight".