138667076 has 12 divisors (see below), whose sum is σ = 242758908. Its totient is φ = 69307392.

The previous prime is 138667033. The next prime is 138667093. The reversal of 138667076 is 670766831.

It is a happy number.

138667076 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13764100 + 124902976 = 3710^2 + 11176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10100 + ... + 19476.

It is an arithmetic number, because the mean of its divisors is an integer number (20229909).

Almost surely, 2^138667076 is an apocalyptic number.

It is an amenable number.

138667076 is a deficient number, since it is larger than the sum of its proper divisors (104091832).

138667076 is a wasteful number, since it uses less digits than its factorization.

138667076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13078 (or 13076 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 138667076 is about 11775.6985355434. The cubic root of 138667076 is about 517.5962477442.

The spelling of 138667076 in words is "one hundred thirty-eight million, six hundred sixty-seven thousand, seventy-six".