28422259 has 2 divisors, whose sum is σ = 28422260. Its totient is φ = 28422258.

The previous prime is 28422221. The next prime is 28422281. The reversal of 28422259 is 95222482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28422259 - 2¹⁷ = 28291187 is a prime.

It is not a weakly prime, because it can be changed into another prime (28422959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14211129 + 14211130.

It is an arithmetic number, because the mean of its divisors is an integer number (14211130).

Almost surely, 2^28422259 is an apocalyptic number.

28422259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28422259 is an equidigital number, since it uses as much as digits as its factorization.

28422259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The square root of 28422259 is about 5331.2530422031. The cubic root of 28422259 is about 305.1777482235.

The spelling of 28422259 in words is "twenty-eight million, four hundred twenty-two thousand, two hundred fifty-nine".