136404208 has 10 divisors (see below), whose sum is σ = 264283184. Its totient is φ = 68202096.

The previous prime is 136404181. The next prime is 136404217. The reversal of 136404208 is 802404631.

It is a super-2 number, since 2×136404208² = 37212215920214528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4262616 + ... + 4262647.

Almost surely, 2^136404208 is an apocalyptic number.

It is an amenable number.

136404208 is a deficient number, since it is larger than the sum of its proper divisors (127878976).

136404208 is an equidigital number, since it uses as much as digits as its factorization.

136404208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525271 (or 8525265 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 136404208 is about 11679.2212069127. The cubic root of 136404208 is about 514.7652909812.

Adding to 136404208 its reverse (802404631), we get a palindrome (938808839).

The spelling of 136404208 in words is "one hundred thirty-six million, four hundred four thousand, two hundred eight".