138673267 has 8 divisors (see below), whose sum is σ = 154558800. Its totient is φ = 123646464.

The previous prime is 138673259. The next prime is 138673277. The reversal of 138673267 is 762376831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138673267 - 2³ = 138673259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138673207) 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, 214342 + ... + 214987.

It is an arithmetic number, because the mean of its divisors is an integer number (19319850).

Almost surely, 2^138673267 is an apocalyptic number.

138673267 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

138673267 is a deficient number, since it is larger than the sum of its proper divisors (15885533).

138673267 is a wasteful number, since it uses less digits than its factorization.

138673267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429365.

The product of its digits is 254016, while the sum is 43.

The square root of 138673267 is about 11775.9614044884. The cubic root of 138673267 is about 517.6039505837.

The spelling of 138673267 in words is "one hundred thirty-eight million, six hundred seventy-three thousand, two hundred sixty-seven".