28084097 has 2 divisors, whose sum is σ = 28084098. Its totient is φ = 28084096.

The previous prime is 28084087. The next prime is 28084099. The reversal of 28084097 is 79048082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28047616 + 36481 = 5296^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 28084097 - 2¹² = 28080001 is a prime.

Together with 28084099, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28084097.

It is not a weakly prime, because it can be changed into another prime (28084099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14042048 + 14042049.

It is an arithmetic number, because the mean of its divisors is an integer number (14042049).

Almost surely, 2^28084097 is an apocalyptic number.

It is an amenable number.

28084097 is a deficient number, since it is larger than the sum of its proper divisors (1).

28084097 is an equidigital number, since it uses as much as digits as its factorization.

28084097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 28084097 is about 5299.4430839476. The cubic root of 28084097 is about 303.9626028847.

The spelling of 28084097 in words is "twenty-eight million, eighty-four thousand, ninety-seven".