20262917 has 2 divisors, whose sum is σ = 20262918. Its totient is φ = 20262916.

The previous prime is 20262883. The next prime is 20262943. The reversal of 20262917 is 71926202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18931201 + 1331716 = 4351^2 + 1154^2 .

It is a cyclic number.

It is not a de Polignac number, because 20262917 - 2⁸ = 20262661 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20262917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20262017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10131458 + 10131459.

It is an arithmetic number, because the mean of its divisors is an integer number (10131459).

Almost surely, 2^20262917 is an apocalyptic number.

It is an amenable number.

20262917 is a deficient number, since it is larger than the sum of its proper divisors (1).

20262917 is an equidigital number, since it uses as much as digits as its factorization.

20262917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20262917 is about 4501.4349934215. The cubic root of 20262917 is about 272.6260315366.

The spelling of 20262917 in words is "twenty million, two hundred sixty-two thousand, nine hundred seventeen".