28043184472 has 8 divisors (see below), whose sum is σ = 52580970900. Its totient is φ = 14021592232.

The previous prime is 28043184457. The next prime is 28043184473. The reversal of 28043184472 is 27448134082.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28043184473) by changing a digit.

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 as a sum of consecutive naturals, namely, 1752699022 + ... + 1752699037.

Almost surely, 2^28043184472 is an apocalyptic number.

It is an amenable number.

28043184472 is a deficient number, since it is larger than the sum of its proper divisors (24537786428).

28043184472 is a wasteful number, since it uses less digits than its factorization.

28043184472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505398065 (or 3505398061 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 43.

The spelling of 28043184472 in words is "twenty-eight billion, forty-three million, one hundred eighty-four thousand, four hundred seventy-two".