138346 has 16 divisors (see below), whose sum is σ = 237384. Its totient is φ = 59904.

The previous prime is 138337. The next prime is 138349. The reversal of 138346 is 643831.

It can be written as a sum of positive squares in 4 ways, for example, as 68121 + 70225 = 261^2 + 265^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138349) 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, 286 + ... + 598.

2¹³⁸³⁴⁶ is an apocalyptic number.

138346 is a deficient number, since it is larger than the sum of its proper divisors (99038).

138346 is a wasteful number, since it uses less digits than its factorization.

138346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its digits is 1728, while the sum is 25.

The square root of 138346 is about 371.9489212244. The cubic root of 138346 is about 51.7196450453.

It can be divided in two parts, 138 and 346, that added together give a palindrome (484).

The spelling of 138346 in words is "one hundred thirty-eight thousand, three hundred forty-six".