28329907 has 2 divisors, whose sum is σ = 28329908. Its totient is φ = 28329906.

The previous prime is 28329883. The next prime is 28329911. The reversal of 28329907 is 70992382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28329907 - 2¹⁹ = 27805619 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28329907.

It is not a weakly prime, because it can be changed into another prime (28329947) 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, 14164953 + 14164954.

It is an arithmetic number, because the mean of its divisors is an integer number (14164954).

Almost surely, 2^28329907 is an apocalyptic number.

28329907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28329907 is an equidigital number, since it uses as much as digits as its factorization.

28329907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 28329907 is about 5322.5846165186. The cubic root of 28329907 is about 304.8468531514.

The spelling of 28329907 in words is "twenty-eight million, three hundred twenty-nine thousand, nine hundred seven".