133306236 has 120 divisors (see below), whose sum is σ = 406153440. Its totient is φ = 37335168.

The previous prime is 133306219. The next prime is 133306267. The reversal of 133306236 is 632603331.

133306236 is a `hidden beast` number, since 1 + 3 + 3 + 30 + 623 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 119650 + ... + 120758.

It is an arithmetic number, because the mean of its divisors is an integer number (3384612).

Almost surely, 2^133306236 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 133306236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203076720).

133306236 is an abundant number, since it is smaller than the sum of its proper divisors (272847204).

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

133306236 is a wasteful number, since it uses less digits than its factorization.

133306236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

The square root of 133306236 is about 11545.8319752195. The cubic root of 133306236 is about 510.8383443474.

Adding to 133306236 its reverse (632603331), we get a palindrome (765909567).

The spelling of 133306236 in words is "one hundred thirty-three million, three hundred six thousand, two hundred thirty-six".