138144296 has 16 divisors (see below), whose sum is σ = 261692340. Its totient is φ = 68359680.

The previous prime is 138144271. The next prime is 138144299. The reversal of 138144296 is 692441831.

It can be written as a sum of positive squares in 2 ways, for example, as 138062500 + 81796 = 11750^2 + 286^2 .

It is not an unprimeable number, because it can be changed into a prime (138144299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88235 + ... + 89786.

Almost surely, 2^138144296 is an apocalyptic number.

It is an amenable number.

138144296 is a deficient number, since it is larger than the sum of its proper divisors (123548044).

138144296 is a wasteful number, since it uses less digits than its factorization.

138144296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178124 (or 178120 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 138144296 is about 11753.4801654659. The cubic root of 138144296 is about 516.9449762920.

The spelling of 138144296 in words is "one hundred thirty-eight million, one hundred forty-four thousand, two hundred ninety-six".