28042844 has 12 divisors (see below), whose sum is σ = 49115304. Its totient is φ = 14009904.

The previous prime is 28042823. The next prime is 28042849. The reversal of 28042844 is 44824082.

It is a self number, because there is not a number n which added to its sum of digits gives 28042844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28042849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4982 + ... + 8994.

It is an arithmetic number, because the mean of its divisors is an integer number (4092942).

Almost surely, 2^28042844 is an apocalyptic number.

It is an amenable number.

28042844 is a deficient number, since it is larger than the sum of its proper divisors (21072460).

28042844 is a wasteful number, since it uses less digits than its factorization.

28042844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764 (or 5762 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 28042844 is about 5295.5494521343. The cubic root of 28042844 is about 303.8136987557.

The spelling of 28042844 in words is "twenty-eight million, forty-two thousand, eight hundred forty-four".