138226 has 16 divisors (see below), whose sum is σ = 232128. Its totient is φ = 61200.

The previous prime is 138209. The next prime is 138239. The reversal of 138226 is 622831.

138226 = T₁₅₃ + T₁₅₄ + ... + T₁₆₃.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 138197 and 138206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (14508).

2¹³⁸²²⁶ is an apocalyptic number.

138226 is a deficient number, since it is larger than the sum of its proper divisors (93902).

138226 is a wasteful number, since it uses less digits than its factorization.

138226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177.

The product of its digits is 576, while the sum is 22.

The square root of 138226 is about 371.7875737568. The cubic root of 138226 is about 51.7046870108.

The spelling of 138226 in words is "one hundred thirty-eight thousand, two hundred twenty-six".