20922073 has 2 divisors, whose sum is σ = 20922074. Its totient is φ = 20922072.

The previous prime is 20922061. The next prime is 20922091. The reversal of 20922073 is 37022902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15147664 + 5774409 = 3892^2 + 2403^2 .

It is a cyclic number.

It is not a de Polignac number, because 20922073 - 2¹³ = 20913881 is a prime.

It is not a weakly prime, because it can be changed into another prime (20922043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10461036 + 10461037.

It is an arithmetic number, because the mean of its divisors is an integer number (10461037).

Almost surely, 2^20922073 is an apocalyptic number.

It is an amenable number.

20922073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20922073 is an equidigital number, since it uses as much as digits as its factorization.

20922073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20922073 is about 4574.0652597006. The cubic root of 20922073 is about 275.5507332434.

Adding to 20922073 its reverse (37022902), we get a palindrome (57944975).

The spelling of 20922073 in words is "twenty million, nine hundred twenty-two thousand, seventy-three".