28093724084 has 54 divisors (see below), whose sum is σ = 51495524262. Its totient is φ = 13409112000.

The previous prime is 28093724081. The next prime is 28093724089. The reversal of 28093724084 is 48042739082.

It can be written as a sum of positive squares in 3 ways, for example, as 710755600 + 27382968484 = 26660^2 + 165478^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28093724081) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 104437502 + ... + 104437770.

Almost surely, 2^28093724084 is an apocalyptic number.

It is an amenable number.

28093724084 is a deficient number, since it is larger than the sum of its proper divisors (23401800178).

28093724084 is a wasteful number, since it uses less digits than its factorization.

28093724084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 28093724084 in words is "twenty-eight billion, ninety-three million, seven hundred twenty-four thousand, eighty-four".