20559412 has 12 divisors (see below), whose sum is σ = 36029700. Its totient is φ = 10265216.

The previous prime is 20559397. The next prime is 20559421. The reversal of 20559412 is 21495502.

It can be written as a sum of positive squares in 2 ways, for example, as 16048036 + 4511376 = 4006^2 + 2124^2 .

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, 37 + ... + 6412.

It is an arithmetic number, because the mean of its divisors is an integer number (3002475).

Almost surely, 2^20559412 is an apocalyptic number.

It is an amenable number.

20559412 is a deficient number, since it is larger than the sum of its proper divisors (15470288).

20559412 is a wasteful number, since it uses less digits than its factorization.

20559412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250 (or 7248 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 20559412 is about 4534.2487801178. The cubic root of 20559412 is about 273.9493219716.

The spelling of 20559412 in words is "twenty million, five hundred fifty-nine thousand, four hundred twelve".