20559230 has 16 divisors (see below), whose sum is σ = 37705824. Its totient is φ = 8068320.

The previous prime is 20559223. The next prime is 20559233. The reversal of 20559230 is 3295502.

It is a self number, because there is not a number n which added to its sum of digits gives 20559230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20559233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18866 + ... + 19925.

It is an arithmetic number, because the mean of its divisors is an integer number (2356614).

Almost surely, 2^20559230 is an apocalyptic number.

20559230 is a deficient number, since it is larger than the sum of its proper divisors (17146594).

20559230 is a wasteful number, since it uses less digits than its factorization.

20559230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38851.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 20559230 is about 4534.2287105968. The cubic root of 20559230 is about 273.9485136002.

The spelling of 20559230 in words is "twenty million, five hundred fifty-nine thousand, two hundred thirty".