136185220 has 12 divisors (see below), whose sum is σ = 285989004. Its totient is φ = 54474080.

The previous prime is 136185211. The next prime is 136185241. The reversal of 136185220 is 22581631.

It can be written as a sum of positive squares in 2 ways, for example, as 15888196 + 120297024 = 3986^2 + 10968^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3404611 + ... + 3404650.

It is an arithmetic number, because the mean of its divisors is an integer number (23832417).

Almost surely, 2^136185220 is an apocalyptic number.

136185220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136185220 is an abundant number, since it is smaller than the sum of its proper divisors (149803784).

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

136185220 is a wasteful number, since it uses less digits than its factorization.

136185220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809270 (or 6809268 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 136185220 is about 11669.8423296975. The cubic root of 136185220 is about 514.4896694723.

The spelling of 136185220 in words is "one hundred thirty-six million, one hundred eighty-five thousand, two hundred twenty".