28111327 has 4 divisors (see below), whose sum is σ = 29018176. Its totient is φ = 27204480.

The previous prime is 28111271. The next prime is 28111331. The reversal of 28111327 is 72311182.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28111327 - 2¹⁵ = 28078559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28111357) 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 in 3 ways as a sum of consecutive naturals, for example, 453378 + ... + 453439.

It is an arithmetic number, because the mean of its divisors is an integer number (7254544).

Almost surely, 2^28111327 is an apocalyptic number.

28111327 is a deficient number, since it is larger than the sum of its proper divisors (906849).

28111327 is an equidigital number, since it uses as much as digits as its factorization.

28111327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906848.

The product of its digits is 672, while the sum is 25.

The square root of 28111327 is about 5302.0115993838. The cubic root of 28111327 is about 304.0608106362.

The spelling of 28111327 in words is "twenty-eight million, one hundred eleven thousand, three hundred twenty-seven".