20269853 has 2 divisors, whose sum is σ = 20269854. Its totient is φ = 20269852.

The previous prime is 20269849. The next prime is 20269871. The reversal of 20269853 is 35896202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20268004 + 1849 = 4502^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 20269853 - 2² = 20269849 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20269153) 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, 10134926 + 10134927.

It is an arithmetic number, because the mean of its divisors is an integer number (10134927).

Almost surely, 2^20269853 is an apocalyptic number.

It is an amenable number.

20269853 is a deficient number, since it is larger than the sum of its proper divisors (1).

20269853 is an equidigital number, since it uses as much as digits as its factorization.

20269853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 20269853 is about 4502.2053484931. The cubic root of 20269853 is about 272.6571346340.

The spelling of 20269853 in words is "twenty million, two hundred sixty-nine thousand, eight hundred fifty-three".