28898339 has 2 divisors, whose sum is σ = 28898340. Its totient is φ = 28898338.

The previous prime is 28898333. The next prime is 28898341. The reversal of 28898339 is 93389882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28898339 - 2¹⁶ = 28832803 is a prime.

It is a super-2 number, since 2×28898339² = 1670227993917842, which contains 22 as substring.

Together with 28898341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28898333) 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, 14449169 + 14449170.

It is an arithmetic number, because the mean of its divisors is an integer number (14449170).

Almost surely, 2^28898339 is an apocalyptic number.

28898339 is a deficient number, since it is larger than the sum of its proper divisors (1).

28898339 is an equidigital number, since it uses as much as digits as its factorization.

28898339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 50.

The square root of 28898339 is about 5375.7175335019. The cubic root of 28898339 is about 306.8722567274.

The spelling of 28898339 in words is "twenty-eight million, eight hundred ninety-eight thousand, three hundred thirty-nine".