28848139 has 2 divisors, whose sum is σ = 28848140. Its totient is φ = 28848138.

The previous prime is 28848121. The next prime is 28848151. The reversal of 28848139 is 93184882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28848139 - 2⁵ = 28848107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28848095 and 28848104.

It is not a weakly prime, because it can be changed into another prime (28848119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14424069 + 14424070.

It is an arithmetic number, because the mean of its divisors is an integer number (14424070).

Almost surely, 2^28848139 is an apocalyptic number.

28848139 is a deficient number, since it is larger than the sum of its proper divisors (1).

28848139 is an equidigital number, since it uses as much as digits as its factorization.

28848139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 43.

The square root of 28848139 is about 5371.0463598818. The cubic root of 28848139 is about 306.6944620101.

The spelling of 28848139 in words is "twenty-eight million, eight hundred forty-eight thousand, one hundred thirty-nine".