138376648 has 32 divisors (see below), whose sum is σ = 276514560. Its totient is φ = 64768000.

The previous prime is 138376643. The next prime is 138376649. The reversal of 138376648 is 846673831.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 138376598 and 138376607.

It is not an unprimeable number, because it can be changed into a prime (138376643) 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, 648 + ... + 16648.

It is an arithmetic number, because the mean of its divisors is an integer number (8641080).

Almost surely, 2^138376648 is an apocalyptic number.

It is an amenable number.

138376648 is a deficient number, since it is larger than the sum of its proper divisors (138137912).

138376648 is a wasteful number, since it uses less digits than its factorization.

138376648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16077 (or 16073 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 138376648 is about 11763.3604042382. The cubic root of 138376648 is about 517.2346394050.

The spelling of 138376648 in words is "one hundred thirty-eight million, three hundred seventy-six thousand, six hundred forty-eight".