28324349 has 2 divisors, whose sum is σ = 28324350. Its totient is φ = 28324348.

The previous prime is 28324343. The next prime is 28324381. The reversal of 28324349 is 94342382.

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., 22024249 + 6300100 = 4693^2 + 2510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28324349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28324343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14162174 + 14162175.

It is an arithmetic number, because the mean of its divisors is an integer number (14162175).

Almost surely, 2^28324349 is an apocalyptic number.

It is an amenable number.

28324349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28324349 is an equidigital number, since it uses as much as digits as its factorization.

28324349 is an evil number, because the sum of its binary digits is even.

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

The square root of 28324349 is about 5322.0624761459. The cubic root of 28324349 is about 304.8269160389.

The spelling of 28324349 in words is "twenty-eight million, three hundred twenty-four thousand, three hundred forty-nine".