20443063 has 4 divisors (see below), whose sum is σ = 20604160. Its totient is φ = 20281968.

The previous prime is 20443039. The next prime is 20443081. The reversal of 20443063 is 36034402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36034402 = 2 ⋅18017201.

It is a cyclic number.

It is not a de Polignac number, because 20443063 - 2¹³ = 20434871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20443363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80358 + ... + 80611.

It is an arithmetic number, because the mean of its divisors is an integer number (5151040).

Almost surely, 2^20443063 is an apocalyptic number.

20443063 is a deficient number, since it is larger than the sum of its proper divisors (161097).

20443063 is a wasteful number, since it uses less digits than its factorization.

20443063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161096.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 20443063 is about 4521.4005573495. The cubic root of 20443063 is about 273.4315697195.

Adding to 20443063 its reverse (36034402), we get a palindrome (56477465).

The spelling of 20443063 in words is "twenty million, four hundred forty-three thousand, sixty-three".