28030844 has 12 divisors (see below), whose sum is σ = 49338744. Its totient is φ = 13934064.

The previous prime is 28030837. The next prime is 28030853. The reversal of 28030844 is 44803082.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19562 + ... + 20945.

It is an arithmetic number, because the mean of its divisors is an integer number (4111562).

Almost surely, 2^28030844 is an apocalyptic number.

It is an amenable number.

28030844 is a deficient number, since it is larger than the sum of its proper divisors (21307900).

28030844 is a wasteful number, since it uses less digits than its factorization.

28030844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40684 (or 40682 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28030844 is about 5294.4163039942. The cubic root of 28030844 is about 303.7703569257.

The spelling of 28030844 in words is "twenty-eight million, thirty thousand, eight hundred forty-four".