136820168 has 16 divisors (see below), whose sum is σ = 256947660. Its totient is φ = 68300800.

The previous prime is 136820141. The next prime is 136820171. The reversal of 136820168 is 861028631.

It can be written as a sum of positive squares in 2 ways, for example, as 133587364 + 3232804 = 11558^2 + 1798^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8213 + ... + 18468.

Almost surely, 2^136820168 is an apocalyptic number.

It is an amenable number.

136820168 is a deficient number, since it is larger than the sum of its proper divisors (120127492).

136820168 is a wasteful number, since it uses less digits than its factorization.

136820168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27328 (or 27324 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 136820168 is about 11697.0153458051. The cubic root of 136820168 is about 515.2880130907.

Adding to 136820168 its reverse (861028631), we get a palindrome (997848799).

The spelling of 136820168 in words is "one hundred thirty-six million, eight hundred twenty thousand, one hundred sixty-eight".