208138 has 8 divisors (see below), whose sum is σ = 356832. Its totient is φ = 89196.

The previous prime is 208129. The next prime is 208139. The reversal of 208138 is 831802.

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

It is not an unprimeable number, because it can be changed into a prime (208139) 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, 7420 + ... + 7447.

It is an arithmetic number, because the mean of its divisors is an integer number (44604).

2²⁰⁸¹³⁸ is an apocalyptic number.

208138 is a deficient number, since it is larger than the sum of its proper divisors (148694).

208138 is a wasteful number, since it uses less digits than its factorization.

208138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14876.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 208138 is about 456.2214374621. The cubic root of 208138 is about 59.2630218194.

The spelling of 208138 in words is "two hundred eight thousand, one hundred thirty-eight".