28885984084 has 12 divisors (see below), whose sum is σ = 50572727604. Its totient is φ = 14436633344.

The previous prime is 28885984081. The next prime is 28885984121. The reversal of 28885984084 is 48048958882.

It can be written as a sum of positive squares in 2 ways, for example, as 14443232400 + 14442751684 = 120180^2 + 120178^2 .

It is a super-2 number, since 2×28885984084² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885984081) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1579447 + ... + 1597630.

It is an arithmetic number, because the mean of its divisors is an integer number (4214393967).

Almost surely, 2^28885984084 is an apocalyptic number.

It is an amenable number.

28885984084 is a deficient number, since it is larger than the sum of its proper divisors (21686743520).

28885984084 is a wasteful number, since it uses less digits than its factorization.

28885984084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179354 (or 3179352 counting only the distinct ones).

The product of its (nonzero) digits is 47185920, while the sum is 64.

The spelling of 28885984084 in words is "twenty-eight billion, eight hundred eighty-five million, nine hundred eighty-four thousand, eighty-four".