133836 has 24 divisors (see below), whose sum is σ = 329280. Its totient is φ = 42192.

The previous prime is 133831. The next prime is 133843. The reversal of 133836 is 638331.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (133831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 521.

It is an arithmetic number, because the mean of its divisors is an integer number (13720).

2¹³³⁸³⁶ is an apocalyptic number.

It is an amenable number.

133836 is an abundant number, since it is smaller than the sum of its proper divisors (195444).

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

133836 is a wasteful number, since it uses less digits than its factorization.

133836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 611 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 133836 is about 365.8360288435. The cubic root of 133836 is about 51.1514146852.

It can be divided in two parts, 133 and 836, that added together give a palindrome (969).

The spelling of 133836 in words is "one hundred thirty-three thousand, eight hundred thirty-six".