28302250 has 16 divisors (see below), whose sum is σ = 52982280. Its totient is φ = 11320800.

The previous prime is 28302247. The next prime is 28302251. The reversal of 28302250 is 5220382.

It can be written as a sum of positive squares in 4 ways, for example, as 12880921 + 15421329 = 3589^2 + 3927^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28302251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56355 + ... + 56854.

Almost surely, 2^28302250 is an apocalyptic number.

28302250 is a deficient number, since it is larger than the sum of its proper divisors (24680030).

28302250 is a wasteful number, since it uses less digits than its factorization.

28302250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113226 (or 113216 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 28302250 is about 5319.9859022370. The cubic root of 28302250 is about 304.7476188624.

The spelling of 28302250 in words is "twenty-eight million, three hundred two thousand, two hundred fifty".