28044255 has 8 divisors (see below), whose sum is σ = 44870832. Its totient is φ = 14956928.

The previous prime is 28044253. The next prime is 28044259. The reversal of 28044255 is 55244082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28044255 - 2¹ = 28044253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28044253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934794 + ... + 934823.

It is an arithmetic number, because the mean of its divisors is an integer number (5608854).

Almost surely, 2^28044255 is an apocalyptic number.

28044255 is a deficient number, since it is larger than the sum of its proper divisors (16826577).

28044255 is a wasteful number, since it uses less digits than its factorization.

28044255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869625.

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 28044255 is about 5295.6826755386. The cubic root of 28044255 is about 303.8187942201.

The spelling of 28044255 in words is "twenty-eight million, forty-four thousand, two hundred fifty-five".