28083366544 has 20 divisors (see below), whose sum is σ = 54440204220. Its totient is φ = 14034281600.

The previous prime is 28083366527. The next prime is 28083366583. The reversal of 28083366544 is 44566338082.

It can be written as a sum of positive squares in 2 ways, for example, as 2884978944 + 25198387600 = 53712^2 + 158740^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431239 + ... + 492070.

It is an arithmetic number, because the mean of its divisors is an integer number (2722010211).

Almost surely, 2^28083366544 is an apocalyptic number.

It is an amenable number.

28083366544 is a deficient number, since it is larger than the sum of its proper divisors (26356837676).

28083366544 is a wasteful number, since it uses less digits than its factorization.

28083366544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925218 (or 925212 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 28083366544 in words is "twenty-eight billion, eighty-three million, three hundred sixty-six thousand, five hundred forty-four".