138386776 has 16 divisors (see below), whose sum is σ = 283064040. Its totient is φ = 62903040.

The previous prime is 138386741. The next prime is 138386777. The reversal of 138386776 is 677683831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138386777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786201 + ... + 786376.

Almost surely, 2^138386776 is an apocalyptic number.

It is an amenable number.

138386776 is an abundant number, since it is smaller than the sum of its proper divisors (144677264).

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

138386776 is a wasteful number, since it uses less digits than its factorization.

138386776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572594 (or 1572590 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 49.

The square root of 138386776 is about 11763.7908855947. The cubic root of 138386776 is about 517.2472581638.

The spelling of 138386776 in words is "one hundred thirty-eight million, three hundred eighty-six thousand, seven hundred seventy-six".