138235086 has 40 divisors (see below), whose sum is σ = 337912344. Its totient is φ = 41888880.

The previous prime is 138235081. The next prime is 138235087. The reversal of 138235086 is 680532831.

138235086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 138235086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138235081) 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, 37005 + ... + 40568.

Almost surely, 2^138235086 is an apocalyptic number.

138235086 is an abundant number, since it is smaller than the sum of its proper divisors (199677258).

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

138235086 is a wasteful number, since it uses less digits than its factorization.

138235086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77598 (or 77589 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 138235086 is about 11757.3417914085. The cubic root of 138235086 is about 517.0581988614.

The spelling of 138235086 in words is "one hundred thirty-eight million, two hundred thirty-five thousand, eighty-six".