28246091 has 2 divisors, whose sum is σ = 28246092. Its totient is φ = 28246090.

The previous prime is 28246081. The next prime is 28246117. The reversal of 28246091 is 19064282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28246091 - 2¹⁰ = 28245067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28246081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14123045 + 14123046.

It is an arithmetic number, because the mean of its divisors is an integer number (14123046).

Almost surely, 2^28246091 is an apocalyptic number.

28246091 is a deficient number, since it is larger than the sum of its proper divisors (1).

28246091 is an equidigital number, since it uses as much as digits as its factorization.

28246091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28246091 is about 5314.7051658582. The cubic root of 28246091 is about 304.5459193064.

The spelling of 28246091 in words is "twenty-eight million, two hundred forty-six thousand, ninety-one".