138322267 has 4 divisors (see below), whose sum is σ = 138611520. Its totient is φ = 138033016.

The previous prime is 138322241. The next prime is 138322273. The reversal of 138322267 is 762223831.

138322267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138322267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138322367) 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, 143908 + ... + 144865.

It is an arithmetic number, because the mean of its divisors is an integer number (34652880).

Almost surely, 2^138322267 is an apocalyptic number.

138322267 is a deficient number, since it is larger than the sum of its proper divisors (289253).

138322267 is an equidigital number, since it uses as much as digits as its factorization.

138322267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289252.

The product of its digits is 24192, while the sum is 34.

The square root of 138322267 is about 11761.0487202460. The cubic root of 138322267 is about 517.1668740636.

The spelling of 138322267 in words is "one hundred thirty-eight million, three hundred twenty-two thousand, two hundred sixty-seven".