33135636 has 12 divisors (see below), whose sum is σ = 77316512. Its totient is φ = 11045208.

The previous prime is 33135631. The next prime is 33135637. The reversal of 33135636 is 63653133.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33135631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380640 + ... + 1380663.

Almost surely, 2^33135636 is an apocalyptic number.

It is an amenable number.

33135636 is an abundant number, since it is smaller than the sum of its proper divisors (44180876).

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

33135636 is a wasteful number, since it uses less digits than its factorization.

33135636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761310 (or 2761308 counting only the distinct ones).

The product of its digits is 14580, while the sum is 30.

The square root of 33135636 is about 5756.3561390866. The cubic root of 33135636 is about 321.1922839381.

Adding to 33135636 its reverse (63653133), we get a palindrome (96788769).

The spelling of 33135636 in words is "thirty-three million, one hundred thirty-five thousand, six hundred thirty-six".