20544230 has 24 divisors (see below), whose sum is σ = 43018128. Its totient is φ = 7043568.

The previous prime is 20544203. The next prime is 20544233. The reversal of 20544230 is 3244502.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20544233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20474 + ... + 21453.

It is an arithmetic number, because the mean of its divisors is an integer number (1792422).

Almost surely, 2^20544230 is an apocalyptic number.

20544230 is an abundant number, since it is smaller than the sum of its proper divisors (22473898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20544230 is a wasteful number, since it uses less digits than its factorization.

20544230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41948 (or 41941 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20544230 is about 4532.5743237149. The cubic root of 20544230 is about 273.8818731752.

Adding to 20544230 its reverse (3244502), we get a palindrome (23788732).

The spelling of 20544230 in words is "twenty million, five hundred forty-four thousand, two hundred thirty".