28043776684 has 48 divisors (see below), whose sum is σ = 62189519616. Its totient is φ = 10747022400.

The previous prime is 28043776681. The next prime is 28043776721. The reversal of 28043776684 is 48667734082.

It is not an unprimeable number, because it can be changed into a prime (28043776681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727534 + ... + 765109.

It is an arithmetic number, because the mean of its divisors is an integer number (1295614992).

Almost surely, 2^28043776684 is an apocalyptic number.

It is an amenable number.

28043776684 is an abundant number, since it is smaller than the sum of its proper divisors (34145742932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28043776684 is a wasteful number, since it uses less digits than its factorization.

28043776684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492726 (or 1492724 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 28043776684 in words is "twenty-eight billion, forty-three million, seven hundred seventy-six thousand, six hundred eighty-four".