138711712 has 48 divisors (see below), whose sum is σ = 286554240. Its totient is φ = 65970432.

The previous prime is 138711709. The next prime is 138711719. The reversal of 138711712 is 217117831.

It is not an unprimeable number, because it can be changed into a prime (138711719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168133 + ... + 168955.

It is an arithmetic number, because the mean of its divisors is an integer number (5969880).

Almost surely, 2^138711712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138711712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143277120).

138711712 is an abundant number, since it is smaller than the sum of its proper divisors (147842528).

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

138711712 is a wasteful number, since it uses less digits than its factorization.

138711712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1077 counting only the distinct ones).

The product of its digits is 2352, while the sum is 31.

The square root of 138711712 is about 11777.5936421665. The cubic root of 138711712 is about 517.6517787043.

The spelling of 138711712 in words is "one hundred thirty-eight million, seven hundred eleven thousand, seven hundred twelve".