28982111 has 2 divisors, whose sum is σ = 28982112. Its totient is φ = 28982110.

The previous prime is 28982101. The next prime is 28982113. The reversal of 28982111 is 11128982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28982111 is a prime.

Together with 28982113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28982113) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14491055 + 14491056.

It is an arithmetic number, because the mean of its divisors is an integer number (14491056).

Almost surely, 2^28982111 is an apocalyptic number.

28982111 is a deficient number, since it is larger than the sum of its proper divisors (1).

28982111 is an equidigital number, since it uses as much as digits as its factorization.

28982111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 32.

The square root of 28982111 is about 5383.5035989586. The cubic root of 28982111 is about 307.1684963840.

The spelling of 28982111 in words is "twenty-eight million, nine hundred eighty-two thousand, one hundred eleven".