138223708 has 36 divisors (see below), whose sum is σ = 296201640. Its totient is φ = 56119392.

The previous prime is 138223703. The next prime is 138223717. The reversal of 138223708 is 807322831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138223703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14835 + ... + 22282.

Almost surely, 2^138223708 is an apocalyptic number.

It is an amenable number.

138223708 is an abundant number, since it is smaller than the sum of its proper divisors (157977932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138223708 is a wasteful number, since it uses less digits than its factorization.

138223708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37154 (or 37145 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 138223708 is about 11756.8579135754. The cubic root of 138223708 is about 517.0440122807.

The spelling of 138223708 in words is "one hundred thirty-eight million, two hundred twenty-three thousand, seven hundred eight".