28118411 has 2 divisors, whose sum is σ = 28118412. Its totient is φ = 28118410.

The previous prime is 28118407. The next prime is 28118471. The reversal of 28118411 is 11481182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28118411 - 2² = 28118407 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28118471) 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, 14059205 + 14059206.

It is an arithmetic number, because the mean of its divisors is an integer number (14059206).

Almost surely, 2^28118411 is an apocalyptic number.

28118411 is a deficient number, since it is larger than the sum of its proper divisors (1).

28118411 is an equidigital number, since it uses as much as digits as its factorization.

28118411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 26.

The square root of 28118411 is about 5302.6796056334. The cubic root of 28118411 is about 304.0863494030.

Adding to 28118411 its reverse (11481182), we get a palindrome (39599593).

The spelling of 28118411 in words is "twenty-eight million, one hundred eighteen thousand, four hundred eleven".