133866306 has 48 divisors (see below), whose sum is σ = 332190144. Its totient is φ = 38165472.

The previous prime is 133866289. The next prime is 133866307. The reversal of 133866306 is 603668331.

133866306 is a `hidden beast` number, since 13 + 3 + 8 + 6 + 630 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (133866307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81465 + ... + 83091.

It is an arithmetic number, because the mean of its divisors is an integer number (6920628).

Almost surely, 2^133866306 is an apocalyptic number.

133866306 is an abundant number, since it is smaller than the sum of its proper divisors (198323838).

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

133866306 is a wasteful number, since it uses less digits than its factorization.

133866306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 133866306 is about 11570.0607604282. The cubic root of 133866306 is about 511.5527532500.

The spelling of 133866306 in words is "one hundred thirty-three million, eight hundred sixty-six thousand, three hundred six".