136680236 has 48 divisors (see below), whose sum is σ = 302346240. Its totient is φ = 52513920.

The previous prime is 136680179. The next prime is 136680239. The reversal of 136680236 is 632086631.

It is a junction number, because it is equal to n+sod(n) for n = 136680196 and 136680205.

It is not an unprimeable number, because it can be changed into a prime (136680239) 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 15 ways as a sum of consecutive naturals, for example, 19445 + ... + 25523.

It is an arithmetic number, because the mean of its divisors is an integer number (6298880).

Almost surely, 2^136680236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136680236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151173120).

136680236 is an abundant number, since it is smaller than the sum of its proper divisors (165666004).

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

136680236 is a wasteful number, since it uses less digits than its factorization.

136680236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174 (or 6172 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 136680236 is about 11691.0322897510. The cubic root of 136680236 is about 515.1122839347.

The spelling of 136680236 in words is "one hundred thirty-six million, six hundred eighty thousand, two hundred thirty-six".