138805048 has 16 divisors (see below), whose sum is σ = 261624960. Its totient is φ = 69038400.

The previous prime is 138805027. The next prime is 138805057. The reversal of 138805048 is 840508831.

It is a junction number, because it is equal to n+sod(n) for n = 138804998 and 138805016.

It is a congruent number.

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, 43893 + ... + 46948.

It is an arithmetic number, because the mean of its divisors is an integer number (16351560).

Almost surely, 2^138805048 is an apocalyptic number.

It is an amenable number.

138805048 is a deficient number, since it is larger than the sum of its proper divisors (122819912).

138805048 is a wasteful number, since it uses less digits than its factorization.

138805048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91038 (or 91034 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 138805048 is about 11781.5554151394. Note that the first 3 decimals coincide. The cubic root of 138805048 is about 517.7678580965.

The spelling of 138805048 in words is "one hundred thirty-eight million, eight hundred five thousand, forty-eight".