28339803 has 6 divisors (see below), whose sum is σ = 40935284. Its totient is φ = 18893196.

The previous prime is 28339781. The next prime is 28339813. The reversal of 28339803 is 30893382.

It is not a de Polignac number, because 28339803 - 2⁵ = 28339771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28339813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1574425 + ... + 1574442.

Almost surely, 2^28339803 is an apocalyptic number.

28339803 is a deficient number, since it is larger than the sum of its proper divisors (12595481).

28339803 is a wasteful number, since it uses less digits than its factorization.

28339803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148873 (or 3148870 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 28339803 is about 5323.5141588992. The cubic root of 28339803 is about 304.8823446582.

The spelling of 28339803 in words is "twenty-eight million, three hundred thirty-nine thousand, eight hundred three".