20044187 has 2 divisors, whose sum is σ = 20044188. Its totient is φ = 20044186.

The previous prime is 20044153. The next prime is 20044237. The reversal of 20044187 is 78144002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20044187 - 2¹⁸ = 19782043 is a prime.

It is not a weakly prime, because it can be changed into another prime (20044127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022093 + 10022094.

It is an arithmetic number, because the mean of its divisors is an integer number (10022094).

Almost surely, 2^20044187 is an apocalyptic number.

20044187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044187 is an equidigital number, since it uses as much as digits as its factorization.

20044187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 20044187 is about 4477.0734861067. The cubic root of 20044187 is about 271.6415179065.

Adding to 20044187 its reverse (78144002), we get a palindrome (98188189).

The spelling of 20044187 in words is "twenty million, forty-four thousand, one hundred eighty-seven".