20522812 has 12 divisors (see below), whose sum is σ = 37805320. Its totient is φ = 9721296.

The previous prime is 20522783. The next prime is 20522849. The reversal of 20522812 is 21822502.

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 3 ways as a sum of consecutive naturals, for example, 134943 + ... + 135094.

Almost surely, 2^20522812 is an apocalyptic number.

It is an amenable number.

20522812 is a deficient number, since it is larger than the sum of its proper divisors (17282508).

20522812 is a wasteful number, since it uses less digits than its factorization.

20522812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270060 (or 270058 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20522812 is about 4530.2110326121. The cubic root of 20522812 is about 273.7866632852.

The spelling of 20522812 in words is "twenty million, five hundred twenty-two thousand, eight hundred twelve".