20043236 has 12 divisors (see below), whose sum is σ = 36207360. Its totient is φ = 9698280.

The previous prime is 20043227. The next prime is 20043239. The reversal of 20043236 is 63234002.

It is not an unprimeable number, because it can be changed into a prime (20043239) by changing a digit.

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, 80696 + ... + 80943.

It is an arithmetic number, because the mean of its divisors is an integer number (3017280).

Almost surely, 2^20043236 is an apocalyptic number.

It is an amenable number.

20043236 is a deficient number, since it is larger than the sum of its proper divisors (16164124).

20043236 is a wasteful number, since it uses less digits than its factorization.

20043236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161674 (or 161672 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20043236 is about 4476.9672770750. The cubic root of 20043236 is about 271.6372218119.

Adding to 20043236 its reverse (63234002), we get a palindrome (83277238).

The spelling of 20043236 in words is "twenty million, forty-three thousand, two hundred thirty-six".