28838039 has 2 divisors, whose sum is σ = 28838040. Its totient is φ = 28838038.

The previous prime is 28838027. The next prime is 28838053. The reversal of 28838039 is 93083882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28838039 - 2⁴ = 28838023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28837987 and 28838005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28838009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14419019 + 14419020.

It is an arithmetic number, because the mean of its divisors is an integer number (14419020).

Almost surely, 2^28838039 is an apocalyptic number.

28838039 is a deficient number, since it is larger than the sum of its proper divisors (1).

28838039 is an equidigital number, since it uses as much as digits as its factorization.

28838039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 28838039 is about 5370.1060510943. The cubic root of 28838039 is about 306.6586656440.

The spelling of 28838039 in words is "twenty-eight million, eight hundred thirty-eight thousand, thirty-nine".