20023273 has 2 divisors, whose sum is σ = 20023274. Its totient is φ = 20023272.

The previous prime is 20023259. The next prime is 20023279. The reversal of 20023273 is 37232002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19740249 + 283024 = 4443^2 + 532^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023273 - 2²¹ = 17926121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20023273.

It is not a weakly prime, because it can be changed into another prime (20023279) 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, 10011636 + 10011637.

It is an arithmetic number, because the mean of its divisors is an integer number (10011637).

Almost surely, 2^20023273 is an apocalyptic number.

It is an amenable number.

20023273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023273 is an equidigital number, since it uses as much as digits as its factorization.

20023273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20023273 is about 4474.7371989872. The cubic root of 20023273 is about 271.5470085818.

Adding to 20023273 its reverse (37232002), we get a palindrome (57255275).

The spelling of 20023273 in words is "twenty million, twenty-three thousand, two hundred seventy-three".