20243066 has 4 divisors (see below), whose sum is σ = 30364602. Its totient is φ = 10121532.

The previous prime is 20243063. The next prime is 20243071. The reversal of 20243066 is 66034202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 7958041 = 3505^2 + 2821^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20243063) 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, 5060765 + ... + 5060768.

Almost surely, 2^20243066 is an apocalyptic number.

20243066 is a deficient number, since it is larger than the sum of its proper divisors (10121536).

20243066 is a wasteful number, since it uses less digits than its factorization.

20243066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10121535.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20243066 is about 4499.2294895904. The cubic root of 20243066 is about 272.5369744739.

Adding to 20243066 its reverse (66034202), we get a palindrome (86277268).

The spelling of 20243066 in words is "twenty million, two hundred forty-three thousand, sixty-six".