136642216 has 16 divisors (see below), whose sum is σ = 257017140. Its totient is φ = 68104320.

The previous prime is 136642213. The next prime is 136642223. The reversal of 136642216 is 612246631.

It can be written as a sum of positive squares in 2 ways, for example, as 127916100 + 8726116 = 11310^2 + 2954^2 .

It is not an unprimeable number, because it can be changed into a prime (136642211) by changing a digit.

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, 24405 + ... + 29476.

Almost surely, 2^136642216 is an apocalyptic number.

It is an amenable number.

136642216 is a deficient number, since it is larger than the sum of its proper divisors (120374924).

136642216 is a wasteful number, since it uses less digits than its factorization.

136642216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54204 (or 54200 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 136642216 is about 11689.4061440263. The cubic root of 136642216 is about 515.0645170060.

Adding to 136642216 its reverse (612246631), we get a palindrome (748888847).

The spelling of 136642216 in words is "one hundred thirty-six million, six hundred forty-two thousand, two hundred sixteen".