138282738 has 16 divisors (see below), whose sum is σ = 301707936. Its totient is φ = 41903840.

The previous prime is 138282719. The next prime is 138282757. The reversal of 138282738 is 837282831.

138282738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138282719) and next prime (138282757).

It is a self number, because there is not a number n which added to its sum of digits gives 138282738.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1047531 + ... + 1047662.

It is an arithmetic number, because the mean of its divisors is an integer number (18856746).

Almost surely, 2^138282738 is an apocalyptic number.

138282738 is an abundant number, since it is smaller than the sum of its proper divisors (163425198).

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

138282738 is a wasteful number, since it uses less digits than its factorization.

138282738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095209.

The product of its digits is 129024, while the sum is 42.

The square root of 138282738 is about 11759.3680952677. The cubic root of 138282738 is about 517.1176049726.

The spelling of 138282738 in words is "one hundred thirty-eight million, two hundred eighty-two thousand, seven hundred thirty-eight".