136206220 has 24 divisors (see below), whose sum is σ = 290883600. Its totient is φ = 53558592.

The previous prime is 136206199. The next prime is 136206221. The reversal of 136206220 is 22602631.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 136206191 and 136206200.

It is not an unprimeable number, because it can be changed into a prime (136206221) 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 7 ways as a sum of consecutive naturals, for example, 56535 + ... + 58894.

It is an arithmetic number, because the mean of its divisors is an integer number (12120150).

Almost surely, 2^136206220 is an apocalyptic number.

136206220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136206220 is an abundant number, since it is smaller than the sum of its proper divisors (154677380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136206220 is a wasteful number, since it uses less digits than its factorization.

136206220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115497 (or 115495 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 136206220 is about 11670.7420501012. The cubic root of 136206220 is about 514.5161131832.

Adding to 136206220 its reverse (22602631), we get a palindrome (158808851).

The spelling of 136206220 in words is "one hundred thirty-six million, two hundred six thousand, two hundred twenty".