28288327 has 2 divisors, whose sum is σ = 28288328. Its totient is φ = 28288326.

The previous prime is 28288301. The next prime is 28288331. The reversal of 28288327 is 72388282.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28288327 - 2¹⁵ = 28255559 is a prime.

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 28288327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28288927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14144163 + 14144164.

It is an arithmetic number, because the mean of its divisors is an integer number (14144164).

Almost surely, 2^28288327 is an apocalyptic number.

28288327 is a deficient number, since it is larger than the sum of its proper divisors (1).

28288327 is an equidigital number, since it uses as much as digits as its factorization.

28288327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 40.

The square root of 28288327 is about 5318.6771851655. The cubic root of 28288327 is about 304.6976381829.

The spelling of 28288327 in words is "twenty-eight million, two hundred eighty-eight thousand, three hundred twenty-seven".