144393668 has 24 divisors (see below), whose sum is σ = 261871680. Its totient is φ = 69582240.

The previous prime is 144393661. The next prime is 144393679. The reversal of 144393668 is 866393441.

It is not an unprimeable number, because it can be changed into a prime (144393661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122723 + ... + 123893.

It is an arithmetic number, because the mean of its divisors is an integer number (10911320).

Almost surely, 2^144393668 is an apocalyptic number.

It is an amenable number.

144393668 is a deficient number, since it is larger than the sum of its proper divisors (117478012).

144393668 is a wasteful number, since it uses less digits than its factorization.

144393668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2265 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 144393668 is about 12016.3916380917. The cubic root of 144393668 is about 524.6254840690.

The spelling of 144393668 in words is "one hundred forty-four million, three hundred ninety-three thousand, six hundred sixty-eight".