20589143 has 2 divisors, whose sum is σ = 20589144. Its totient is φ = 20589142.

The previous prime is 20589109. The next prime is 20589157. The reversal of 20589143 is 34198502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20589143 - 2¹⁰ = 20588119 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20589343) 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 as a sum of consecutive naturals, namely, 10294571 + 10294572.

It is an arithmetic number, because the mean of its divisors is an integer number (10294572).

Almost surely, 2^20589143 is an apocalyptic number.

20589143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20589143 is an equidigital number, since it uses as much as digits as its factorization.

20589143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 20589143 is about 4537.5260880793. The cubic root of 20589143 is about 274.0813112259.

The spelling of 20589143 in words is "twenty million, five hundred eighty-nine thousand, one hundred forty-three".