28335091 has 2 divisors, whose sum is σ = 28335092. Its totient is φ = 28335090.

The previous prime is 28335079. The next prime is 28335113. The reversal of 28335091 is 19053382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28335091 - 2⁷ = 28334963 is a prime.

It is not a weakly prime, because it can be changed into another prime (28335191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14167545 + 14167546.

It is an arithmetic number, because the mean of its divisors is an integer number (14167546).

Almost surely, 2^28335091 is an apocalyptic number.

28335091 is a deficient number, since it is larger than the sum of its proper divisors (1).

28335091 is an equidigital number, since it uses as much as digits as its factorization.

28335091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 28335091 is about 5323.0715756976. The cubic root of 28335091 is about 304.8654463375.

The spelling of 28335091 in words is "twenty-eight million, three hundred thirty-five thousand, ninety-one".