28334429 has 2 divisors, whose sum is σ = 28334430. Its totient is φ = 28334428.

The previous prime is 28334417. The next prime is 28334473. The reversal of 28334429 is 92443382.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28334329 + 100 = 5323^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 28334429 - 2¹² = 28330333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28334629) 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, 14167214 + 14167215.

It is an arithmetic number, because the mean of its divisors is an integer number (14167215).

Almost surely, 2^28334429 is an apocalyptic number.

It is an amenable number.

28334429 is a deficient number, since it is larger than the sum of its proper divisors (1).

28334429 is an equidigital number, since it uses as much as digits as its factorization.

28334429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 35.

The square root of 28334429 is about 5323.0093931910. The cubic root of 28334429 is about 304.8630721025.

The spelling of 28334429 in words is "twenty-eight million, three hundred thirty-four thousand, four hundred twenty-nine".