28444340255 has 16 divisors (see below), whose sum is σ = 35059875840. Its totient is φ = 22141720608.

The previous prime is 28444340233. The next prime is 28444340293. The reversal of 28444340255 is 55204344482.

It is a cyclic number.

It is not a de Polignac number, because 28444340255 - 2²⁴ = 28427563039 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 194975 + ... + 308064.

It is an arithmetic number, because the mean of its divisors is an integer number (2191242240).

Almost surely, 2^28444340255 is an apocalyptic number.

28444340255 is a deficient number, since it is larger than the sum of its proper divisors (6615535585).

28444340255 is a wasteful number, since it uses less digits than its factorization.

28444340255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503350.

The product of its (nonzero) digits is 614400, while the sum is 41.

The spelling of 28444340255 in words is "twenty-eight billion, four hundred forty-four million, three hundred forty thousand, two hundred fifty-five".