11428111 has 2 divisors, whose sum is σ = 11428112. Its totient is φ = 11428110.

The previous prime is 11428069. The next prime is 11428121. The reversal of 11428111 is 11182411.

11428111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11428111 - 2¹⁵ = 11395343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11428121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5714055 + 5714056.

It is an arithmetic number, because the mean of its divisors is an integer number (5714056).

Almost surely, 2^11428111 is an apocalyptic number.

11428111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11428111 is an equidigital number, since it uses as much as digits as its factorization.

11428111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64, while the sum is 19.

The square root of 11428111 is about 3380.5489199241. The cubic root of 11428111 is about 225.2465511340.

The spelling of 11428111 in words is "eleven million, four hundred twenty-eight thousand, one hundred eleven".