136500220 has 24 divisors (see below), whose sum is σ = 292751424. Its totient is φ = 53438016.

The previous prime is 136500197. The next prime is 136500227. The reversal of 136500220 is 22005631.

It is a happy number.

136500220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136500227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71667 + ... + 73546.

It is an arithmetic number, because the mean of its divisors is an integer number (12197976).

Almost surely, 2^136500220 is an apocalyptic number.

136500220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136500220 is an abundant number, since it is smaller than the sum of its proper divisors (156251204).

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

136500220 is a wasteful number, since it uses less digits than its factorization.

136500220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145269 (or 145267 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 136500220 is about 11683.3308606750. The cubic root of 136500220 is about 514.8860400751.

Adding to 136500220 its reverse (22005631), we get a palindrome (158505851).

The spelling of 136500220 in words is "one hundred thirty-six million, five hundred thousand, two hundred twenty".