20448227 has 2 divisors, whose sum is σ = 20448228. Its totient is φ = 20448226.

The previous prime is 20448223. The next prime is 20448247. The reversal of 20448227 is 72284402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20448227 - 2² = 20448223 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 20448227.

It is not a weakly prime, because it can be changed into another prime (20448223) 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, 10224113 + 10224114.

It is an arithmetic number, because the mean of its divisors is an integer number (10224114).

Almost surely, 2^20448227 is an apocalyptic number.

20448227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20448227 is an equidigital number, since it uses as much as digits as its factorization.

20448227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 20448227 is about 4521.9715832809. The cubic root of 20448227 is about 273.4545910863.

The spelling of 20448227 in words is "twenty million, four hundred forty-eight thousand, two hundred twenty-seven".