20026812 has 24 divisors (see below), whose sum is σ = 50324176. Its totient is φ = 6162048.

The previous prime is 20026801. The next prime is 20026829. The reversal of 20026812 is 21862002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 64033 + ... + 64344.

Almost surely, 2^20026812 is an apocalyptic number.

It is an amenable number.

20026812 is an abundant number, since it is smaller than the sum of its proper divisors (30297364).

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

20026812 is a wasteful number, since it uses less digits than its factorization.

20026812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128397 (or 128395 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20026812 is about 4475.1326237331. The cubic root of 20026812 is about 271.5630057709.

Adding to 20026812 its reverse (21862002), we get a palindrome (41888814).

The spelling of 20026812 in words is "twenty million, twenty-six thousand, eight hundred twelve".