138734206 has 32 divisors (see below), whose sum is σ = 236271168. Its totient is φ = 60614400.

The previous prime is 138734203. The next prime is 138734249. The reversal of 138734206 is 602437831.

It is a happy number.

138734206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138734203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59250 + ... + 61546.

It is an arithmetic number, because the mean of its divisors is an integer number (7383474).

Almost surely, 2^138734206 is an apocalyptic number.

138734206 is a deficient number, since it is larger than the sum of its proper divisors (97536962).

138734206 is a wasteful number, since it uses less digits than its factorization.

138734206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 138734206 is about 11778.5485523472. The cubic root of 138734206 is about 517.6797586290.

The spelling of 138734206 in words is "one hundred thirty-eight million, seven hundred thirty-four thousand, two hundred six".