33636138 has 16 divisors (see below), whose sum is σ = 67677120. Its totient is φ = 11144576.

The previous prime is 33636101. The next prime is 33636181. The reversal of 33636138 is 83163633.

It is a super-2 number, since 2×33636138² = 2262779559110088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33636099 and 33636108.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15783 + ... + 17786.

It is an arithmetic number, because the mean of its divisors is an integer number (4229820).

Almost surely, 2^33636138 is an apocalyptic number.

33636138 is an abundant number, since it is smaller than the sum of its proper divisors (34040982).

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

33636138 is a wasteful number, since it uses less digits than its factorization.

33636138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33741.

The product of its digits is 23328, while the sum is 33.

The square root of 33636138 is about 5799.6670594095. The cubic root of 33636138 is about 322.8013744300.

The spelling of 33636138 in words is "thirty-three million, six hundred thirty-six thousand, one hundred thirty-eight".