144471688 has 8 divisors (see below), whose sum is σ = 270884430. Its totient is φ = 72235840.

The previous prime is 144471667. The next prime is 144471689. The reversal of 144471688 is 886174441.

It is a happy number.

144471688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 138721284 + 5750404 = 11778^2 + 2398^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (144471689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9029473 + ... + 9029488.

Almost surely, 2^144471688 is an apocalyptic number.

It is an amenable number.

144471688 is a deficient number, since it is larger than the sum of its proper divisors (126412742).

144471688 is a wasteful number, since it uses less digits than its factorization.

144471688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18058967 (or 18058963 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 144471688 is about 12019.6375985302. The cubic root of 144471688 is about 524.7199570722.

It can be divided in two parts, 1444716 and 88, that added together give a square (1444804 = 1202²).

The spelling of 144471688 in words is "one hundred forty-four million, four hundred seventy-one thousand, six hundred eighty-eight".