138227 has 8 divisors (see below), whose sum is σ = 150336. Its totient is φ = 126592.

The previous prime is 138209. The next prime is 138239. The reversal of 138227 is 722831.

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 138227 - 2⁶ = 138163 is a prime.

It is a d-powerful number, because it can be written as 1 + 3⁸ + 2⁵ + 8³ + 2¹⁷ + 7² .

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (138247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713 + ... + 885.

It is an arithmetic number, because the mean of its divisors is an integer number (18792).

2¹³⁸²²⁷ is an apocalyptic number.

138227 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

138227 is a deficient number, since it is larger than the sum of its proper divisors (12109).

138227 is a wasteful number, since it uses less digits than its factorization.

138227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237.

The product of its digits is 672, while the sum is 23.

The square root of 138227 is about 371.7889186084. The cubic root of 138227 is about 51.7048116968.

The spelling of 138227 in words is "one hundred thirty-eight thousand, two hundred twenty-seven".