28730267 has 2 divisors, whose sum is σ = 28730268. Its totient is φ = 28730266.

The previous prime is 28730263. The next prime is 28730281. The reversal of 28730267 is 76203782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28730267 - 2² = 28730263 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28730263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14365133 + 14365134.

It is an arithmetic number, because the mean of its divisors is an integer number (14365134).

Almost surely, 2^28730267 is an apocalyptic number.

28730267 is a deficient number, since it is larger than the sum of its proper divisors (1).

28730267 is an equidigital number, since it uses as much as digits as its factorization.

28730267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 28730267 is about 5360.0622197881. The cubic root of 28730267 is about 306.2761792420.

The spelling of 28730267 in words is "twenty-eight million, seven hundred thirty thousand, two hundred sixty-seven".