138286912 has 14 divisors (see below), whose sum is σ = 274413218. Its totient is φ = 69143424.

The previous prime is 138286901. The next prime is 138286919. The reversal of 138286912 is 219682831.

It can be written as a sum of positive squares in only one way, i.e., 136048896 + 2238016 = 11664^2 + 1496^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138286919) by changing a digit.

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 as a sum of consecutive naturals, namely, 1080303 + ... + 1080430.

Almost surely, 2^138286912 is an apocalyptic number.

It is an amenable number.

138286912 is a deficient number, since it is larger than the sum of its proper divisors (136126306).

138286912 is an equidigital number, since it uses as much as digits as its factorization.

138286912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160745 (or 2160735 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 138286912 is about 11759.5455694512. The cubic root of 138286912 is about 517.1228079049.

The spelling of 138286912 in words is "one hundred thirty-eight million, two hundred eighty-six thousand, nine hundred twelve".