28227011 has 2 divisors, whose sum is σ = 28227012. Its totient is φ = 28227010.

The previous prime is 28226999. The next prime is 28227013. The reversal of 28227011 is 11072282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28227011 - 2¹⁰ = 28225987 is a prime.

Together with 28227013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28227013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14113505 + 14113506.

It is an arithmetic number, because the mean of its divisors is an integer number (14113506).

Almost surely, 2^28227011 is an apocalyptic number.

28227011 is a deficient number, since it is larger than the sum of its proper divisors (1).

28227011 is an equidigital number, since it uses as much as digits as its factorization.

28227011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 28227011 is about 5312.9098430145. The cubic root of 28227011 is about 304.4773311137.

Adding to 28227011 its reverse (11072282), we get a palindrome (39299293).

The spelling of 28227011 in words is "twenty-eight million, two hundred twenty-seven thousand, eleven".