20033836 has 12 divisors (see below), whose sum is σ = 35213920. Its totient is φ = 9972720.

The previous prime is 20033831. The next prime is 20033861. The reversal of 20033836 is 63833002.

It is a self number, because there is not a number n which added to its sum of digits gives 20033836.

It is not an unprimeable number, because it can be changed into a prime (20033831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10020 + ... + 11851.

Almost surely, 2^20033836 is an apocalyptic number.

It is an amenable number.

20033836 is a deficient number, since it is larger than the sum of its proper divisors (15180084).

20033836 is a wasteful number, since it uses less digits than its factorization.

20033836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22104 (or 22102 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20033836 is about 4475.9173361446. The cubic root of 20033836 is about 271.5947504739.

Adding to 20033836 its reverse (63833002), we get a palindrome (83866838).

The spelling of 20033836 in words is "twenty million, thirty-three thousand, eight hundred thirty-six".