138671076 has 24 divisors (see below), whose sum is σ = 323767584. Its totient is φ = 46194880.

The previous prime is 138671053. The next prime is 138671077. The reversal of 138671076 is 670176831.

138671076 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138671077) 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, 26536 + ... + 31328.

It is an arithmetic number, because the mean of its divisors is an integer number (13490316).

Almost surely, 2^138671076 is an apocalyptic number.

It is an amenable number.

138671076 is an abundant number, since it is smaller than the sum of its proper divisors (185096508).

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

138671076 is a wasteful number, since it uses less digits than its factorization.

138671076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7211 (or 7209 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 138671076 is about 11775.8683756231. The cubic root of 138671076 is about 517.6012245686.

The spelling of 138671076 in words is "one hundred thirty-eight million, six hundred seventy-one thousand, seventy-six".