28027369445 has 8 divisors (see below), whose sum is σ = 33818661240. Its totient is φ = 22298016960.

The previous prime is 28027369439. The next prime is 28027369511. The reversal of 28027369445 is 54496372082.

It can be written as a sum of positive squares in 4 ways, for example, as 3248202049 + 24779167396 = 56993^2 + 157414^2 .

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

It is not a de Polignac number, because 28027369445 - 2⁸ = 28027369189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28027369393 and 28027369402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15483830 + ... + 15485639.

It is an arithmetic number, because the mean of its divisors is an integer number (4227332655).

Almost surely, 2^28027369445 is an apocalyptic number.

It is an amenable number.

28027369445 is a deficient number, since it is larger than the sum of its proper divisors (5791291795).

28027369445 is a wasteful number, since it uses less digits than its factorization.

28027369445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30969655.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 28027369445 in words is "twenty-eight billion, twenty-seven million, three hundred sixty-nine thousand, four hundred forty-five".