20322073 has 2 divisors, whose sum is σ = 20322074. Its totient is φ = 20322072.

The previous prime is 20322061. The next prime is 20322083. The reversal of 20322073 is 37022302.

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., 20322064 + 9 = 4508^2 + 3^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20322073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20322073.

It is not a weakly prime, because it can be changed into another prime (20322053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161036 + 10161037.

It is an arithmetic number, because the mean of its divisors is an integer number (10161037).

Almost surely, 2^20322073 is an apocalyptic number.

It is an amenable number.

20322073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322073 is an equidigital number, since it uses as much as digits as its factorization.

20322073 is an evil number, because the sum of its binary digits is even.

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

The square root of 20322073 is about 4508.0009982253. Note that the first 3 decimals coincide. The cubic root of 20322073 is about 272.8910772296.

Adding to 20322073 its reverse (37022302), we get a palindrome (57344375).

The spelling of 20322073 in words is "twenty million, three hundred twenty-two thousand, seventy-three".