138710634 has 16 divisors (see below), whose sum is σ = 277591872. Its totient is φ = 46208448.

The previous prime is 138710623. The next prime is 138710651. The reversal of 138710634 is 436017831.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 138710595 and 138710604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5067 + ... + 17409.

It is an arithmetic number, because the mean of its divisors is an integer number (17349492).

Almost surely, 2^138710634 is an apocalyptic number.

138710634 is an abundant number, since it is smaller than the sum of its proper divisors (138881238).

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

138710634 is a wasteful number, since it uses less digits than its factorization.

138710634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14221.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 138710634 is about 11777.5478772111. The cubic root of 138710634 is about 517.6504377215.

It can be divided in two parts, 1387 and 10634, that added together give a palindrome (12021).

The spelling of 138710634 in words is "one hundred thirty-eight million, seven hundred ten thousand, six hundred thirty-four".