136420208 has 20 divisors (see below), whose sum is σ = 264712968. Its totient is φ = 68107200.

The previous prime is 136420201. The next prime is 136420237. The reversal of 136420208 is 802024631.

It is a super-2 number, since 2×136420208² = 37220946301526528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136420201) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5135 + ... + 17297.

Almost surely, 2^136420208 is an apocalyptic number.

It is an amenable number.

136420208 is a deficient number, since it is larger than the sum of its proper divisors (128292760).

136420208 is a wasteful number, since it uses less digits than its factorization.

136420208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12872 (or 12866 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 136420208 is about 11679.9061640066. The cubic root of 136420208 is about 514.7854172485.

Adding to 136420208 its reverse (802024631), we get a palindrome (938444839).

The spelling of 136420208 in words is "one hundred thirty-six million, four hundred twenty thousand, two hundred eight".