28257067 has 2 divisors, whose sum is σ = 28257068. Its totient is φ = 28257066.

The previous prime is 28257037. The next prime is 28257121. The reversal of 28257067 is 76075282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28257067 - 2⁷ = 28256939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28257007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14128533 + 14128534.

It is an arithmetic number, because the mean of its divisors is an integer number (14128534).

Almost surely, 2^28257067 is an apocalyptic number.

28257067 is a deficient number, since it is larger than the sum of its proper divisors (1).

28257067 is an equidigital number, since it uses as much as digits as its factorization.

28257067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 28257067 is about 5315.7376722333. The cubic root of 28257067 is about 304.5853614972.

The spelling of 28257067 in words is "twenty-eight million, two hundred fifty-seven thousand, sixty-seven".