28254089 has 2 divisors, whose sum is σ = 28254090. Its totient is φ = 28254088.

The previous prime is 28254077. The next prime is 28254103. The reversal of 28254089 is 98045282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 2325625 = 5092^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 28254089 - 2⁴ = 28254073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28259089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14127044 + 14127045.

It is an arithmetic number, because the mean of its divisors is an integer number (14127045).

Almost surely, 2^28254089 is an apocalyptic number.

It is an amenable number.

28254089 is a deficient number, since it is larger than the sum of its proper divisors (1).

28254089 is an equidigital number, since it uses as much as digits as its factorization.

28254089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 28254089 is about 5315.4575532121. The cubic root of 28254089 is about 304.5746610817.

The spelling of 28254089 in words is "twenty-eight million, two hundred fifty-four thousand, eighty-nine".