138627340 has 24 divisors (see below), whose sum is σ = 292203072. Its totient is φ = 55244160.

The previous prime is 138627331. The next prime is 138627343. The reversal of 138627340 is 43726831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 138627296 and 138627305.

It is not an unprimeable number, because it can be changed into a prime (138627343) 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, 7369 + ... + 18208.

It is an arithmetic number, because the mean of its divisors is an integer number (12175128).

Almost surely, 2^138627340 is an apocalyptic number.

138627340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138627340 is an abundant number, since it is smaller than the sum of its proper divisors (153575732).

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

138627340 is a wasteful number, since it uses less digits than its factorization.

138627340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25857 (or 25855 counting only the distinct ones).

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

The square root of 138627340 is about 11774.0112111379. The cubic root of 138627340 is about 517.5468027715.

The spelling of 138627340 in words is "one hundred thirty-eight million, six hundred twenty-seven thousand, three hundred forty".