28928267 has 2 divisors, whose sum is σ = 28928268. Its totient is φ = 28928266.

The previous prime is 28928257. The next prime is 28928269. The reversal of 28928267 is 76282982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28928267 - 2¹² = 28924171 is a prime.

Together with 28928269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28928269) 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, 14464133 + 14464134.

It is an arithmetic number, because the mean of its divisors is an integer number (14464134).

Almost surely, 2^28928267 is an apocalyptic number.

28928267 is a deficient number, since it is larger than the sum of its proper divisors (1).

28928267 is an equidigital number, since it uses as much as digits as its factorization.

28928267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 28928267 is about 5378.5004415729. The cubic root of 28928267 is about 306.9781555968.

The spelling of 28928267 in words is "twenty-eight million, nine hundred twenty-eight thousand, two hundred sixty-seven".