28241839 has 2 divisors, whose sum is σ = 28241840. Its totient is φ = 28241838.

The previous prime is 28241831. The next prime is 28241849. The reversal of 28241839 is 93814282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28241839 - 2³ = 28241831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28241798 and 28241807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28241831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14120919 + 14120920.

It is an arithmetic number, because the mean of its divisors is an integer number (14120920).

Almost surely, 2^28241839 is an apocalyptic number.

28241839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28241839 is an equidigital number, since it uses as much as digits as its factorization.

28241839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 28241839 is about 5314.3051286128. The cubic root of 28241839 is about 304.5306370239.

The spelling of 28241839 in words is "twenty-eight million, two hundred forty-one thousand, eight hundred thirty-nine".