20559086 has 24 divisors (see below), whose sum is σ = 33864480. Its totient is φ = 9328256.

The previous prime is 20559067. The next prime is 20559113. The reversal of 20559086 is 68095502.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28235 + ... + 28953.

It is an arithmetic number, because the mean of its divisors is an integer number (1411020).

Almost surely, 2^20559086 is an apocalyptic number.

20559086 is a deficient number, since it is larger than the sum of its proper divisors (13305394).

20559086 is a wasteful number, since it uses less digits than its factorization.

20559086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 20559086 is about 4534.2128313523. The cubic root of 20559086 is about 273.9478740062.

The spelling of 20559086 in words is "twenty million, five hundred fifty-nine thousand, eighty-six".