28274347 has 2 divisors, whose sum is σ = 28274348. Its totient is φ = 28274346.

The previous prime is 28274339. The next prime is 28274353. The reversal of 28274347 is 74347282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28274347 - 2³ = 28274339 is a prime.

It is not a weakly prime, because it can be changed into another prime (28274357) 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 as a sum of consecutive naturals, namely, 14137173 + 14137174.

It is an arithmetic number, because the mean of its divisors is an integer number (14137174).

Almost surely, 2^28274347 is an apocalyptic number.

28274347 is a deficient number, since it is larger than the sum of its proper divisors (1).

28274347 is an equidigital number, since it uses as much as digits as its factorization.

28274347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 37.

The square root of 28274347 is about 5317.3627861939. The cubic root of 28274347 is about 304.6474363820.

The spelling of 28274347 in words is "twenty-eight million, two hundred seventy-four thousand, three hundred forty-seven".