28254329 has 2 divisors, whose sum is σ = 28254330. Its totient is φ = 28254328.

The previous prime is 28254319. The next prime is 28254337. The reversal of 28254329 is 92345282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16386304 + 11868025 = 4048^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 28254329 - 2⁸ = 28254073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28254319) 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, 14127164 + 14127165.

It is an arithmetic number, because the mean of its divisors is an integer number (14127165).

Almost surely, 2^28254329 is an apocalyptic number.

It is an amenable number.

28254329 is a deficient number, since it is larger than the sum of its proper divisors (1).

28254329 is an equidigital number, since it uses as much as digits as its factorization.

28254329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 28254329 is about 5315.4801288313. The cubic root of 28254329 is about 304.5755234667.

The spelling of 28254329 in words is "twenty-eight million, two hundred fifty-four thousand, three hundred twenty-nine".