28822111 has 2 divisors, whose sum is σ = 28822112. Its totient is φ = 28822110.

The previous prime is 28822109. The next prime is 28822133. The reversal of 28822111 is 11122882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28822111 - 2¹ = 28822109 is a prime.

Together with 28822109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28822141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14411055 + 14411056.

It is an arithmetic number, because the mean of its divisors is an integer number (14411056).

Almost surely, 2^28822111 is an apocalyptic number.

28822111 is a deficient number, since it is larger than the sum of its proper divisors (1).

28822111 is an equidigital number, since it uses as much as digits as its factorization.

28822111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 25.

The square root of 28822111 is about 5368.6228215437. The cubic root of 28822111 is about 306.6021967238.

Adding to 28822111 its reverse (11122882), we get a palindrome (39944993).

The spelling of 28822111 in words is "twenty-eight million, eight hundred twenty-two thousand, one hundred eleven".