28335249 has 6 divisors (see below), whose sum is σ = 40928706. Its totient is φ = 18890160.

The previous prime is 28335217. The next prime is 28335253. The reversal of 28335249 is 94253382.

It can be written as a sum of positive squares in only one way, i.e., 25553025 + 2782224 = 5055^2 + 1668^2 .

It is not a de Polignac number, because 28335249 - 2⁵ = 28335217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28335259) 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 in 5 ways as a sum of consecutive naturals, for example, 1574172 + ... + 1574189.

It is an arithmetic number, because the mean of its divisors is an integer number (6821451).

Almost surely, 2^28335249 is an apocalyptic number.

It is an amenable number.

28335249 is a deficient number, since it is larger than the sum of its proper divisors (12593457).

28335249 is a wasteful number, since it uses less digits than its factorization.

28335249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148367 (or 3148364 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 28335249 is about 5323.0864167323. The cubic root of 28335249 is about 304.8660129924.

The spelling of 28335249 in words is "twenty-eight million, three hundred thirty-five thousand, two hundred forty-nine".