28055798 has 16 divisors (see below), whose sum is σ = 43396560. Its totient is φ = 13597056.

The previous prime is 28055779. The next prime is 28055801. The reversal of 28055798 is 89755082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6986 + ... + 10242.

It is an arithmetic number, because the mean of its divisors is an integer number (2712285).

Almost surely, 2^28055798 is an apocalyptic number.

28055798 is a deficient number, since it is larger than the sum of its proper divisors (15340762).

28055798 is a wasteful number, since it uses less digits than its factorization.

28055798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 28055798 is about 5296.7724134609. The cubic root of 28055798 is about 303.8604723855.

The spelling of 28055798 in words is "twenty-eight million, fifty-five thousand, seven hundred ninety-eight".