138771376 has 40 divisors (see below), whose sum is σ = 279855104. Its totient is φ = 66588480.

The previous prime is 138771359. The next prime is 138771379. The reversal of 138771376 is 673177831.

It is not an unprimeable number, because it can be changed into a prime (138771379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61891 + ... + 64093.

Almost surely, 2^138771376 is an apocalyptic number.

138771376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138771376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139927552).

138771376 is an abundant number, since it is smaller than the sum of its proper divisors (141083728).

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

138771376 is a wasteful number, since it uses less digits than its factorization.

138771376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2363 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The square root of 138771376 is about 11780.1263151122. The cubic root of 138771376 is about 517.7259871667.

The spelling of 138771376 in words is "one hundred thirty-eight million, seven hundred seventy-one thousand, three hundred seventy-six".