20522912 has 24 divisors (see below), whose sum is σ = 40896576. Its totient is φ = 10136512.

The previous prime is 20522891. The next prime is 20522939. The reversal of 20522912 is 21922502.

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 3 ways as a sum of consecutive naturals, for example, 1208 + ... + 6519.

It is an arithmetic number, because the mean of its divisors is an integer number (1704024).

Almost surely, 2^20522912 is an apocalyptic number.

It is an amenable number.

20522912 is a deficient number, since it is larger than the sum of its proper divisors (20373664).

20522912 is an equidigital number, since it uses as much as digits as its factorization.

20522912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820 (or 7812 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 20522912 is about 4530.2220696120. Note that the first 3 decimals coincide. The cubic root of 20522912 is about 273.7871079712.

The spelling of 20522912 in words is "twenty million, five hundred twenty-two thousand, nine hundred twelve".