208136 has 8 divisors (see below), whose sum is σ = 390270. Its totient is φ = 104064.

The previous prime is 208129. The next prime is 208139. The reversal of 208136 is 631802.

It can be written as a sum of positive squares in only one way, i.e., 155236 + 52900 = 394^2 + 230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 208136.

It is not an unprimeable number, because it can be changed into a prime (208139) by changing a digit.

208136 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13001 + ... + 13016.

2²⁰⁸¹³⁶ is an apocalyptic number.

It is an amenable number.

208136 is a deficient number, since it is larger than the sum of its proper divisors (182134).

208136 is a wasteful number, since it uses less digits than its factorization.

208136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26023 (or 26019 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 208136 is about 456.2192455388. The cubic root of 208136 is about 59.2628319991.

Adding to 208136 its reverse (631802), we get a palindrome (839938).

The spelling of 208136 in words is "two hundred eight thousand, one hundred thirty-six".