138075678 has 40 divisors (see below), whose sum is σ = 333196248. Its totient is φ = 42484176.

The previous prime is 138075673. The next prime is 138075697. The reversal of 138075678 is 876570831.

138075678 is a `hidden beast` number, since 1 + 3 + 80 + 7 + 567 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138075673) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30676 + ... + 34887.

Almost surely, 2^138075678 is an apocalyptic number.

138075678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138075678 is an abundant number, since it is smaller than the sum of its proper divisors (195120570).

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

138075678 is a wasteful number, since it uses less digits than its factorization.

138075678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65590 (or 65581 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 138075678 is about 11750.5607525769. The cubic root of 138075678 is about 516.8593711045.

The spelling of 138075678 in words is "one hundred thirty-eight million, seventy-five thousand, six hundred seventy-eight".