20722307 has 2 divisors, whose sum is σ = 20722308. Its totient is φ = 20722306.

The previous prime is 20722301. The next prime is 20722313. The reversal of 20722307 is 70322702.

It is a balanced prime because it is at equal distance from previous prime (20722301) and next prime (20722313).

It is a cyclic number.

It is not a de Polignac number, because 20722307 - 2¹⁶ = 20656771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20722301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10361153 + 10361154.

It is an arithmetic number, because the mean of its divisors is an integer number (10361154).

Almost surely, 2^20722307 is an apocalyptic number.

20722307 is a deficient number, since it is larger than the sum of its proper divisors (1).

20722307 is an equidigital number, since it uses as much as digits as its factorization.

20722307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 20722307 is about 4552.1760730446. The cubic root of 20722307 is about 274.6709320106.

The spelling of 20722307 in words is "twenty million, seven hundred twenty-two thousand, three hundred seven".