135838 has 8 divisors (see below), whose sum is σ = 212688. Its totient is φ = 64944.

The previous prime is 135829. The next prime is 135841. The reversal of 135838 is 838531.

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

It is a congruent number.

It is an unprimeable number.

135838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431 + ... + 1522.

It is an arithmetic number, because the mean of its divisors is an integer number (26586).

2¹³⁵⁸³⁸ is an apocalyptic number.

135838 is a deficient number, since it is larger than the sum of its proper divisors (76850).

135838 is a wasteful number, since it uses less digits than its factorization.

135838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its digits is 2880, while the sum is 28.

The square root of 135838 is about 368.5620707561. The cubic root of 135838 is about 51.4052046994.

The spelling of 135838 in words is "one hundred thirty-five thousand, eight hundred thirty-eight".