27808003728 has 50 divisors (see below), whose sum is σ = 80484434294. Its totient is φ = 9269334144.

The previous prime is 27808003721. The next prime is 27808003771. The reversal of 27808003728 is 82730080872.

27808003728 is a `hidden beast` number, since 278 + 0 + 8 + 0 + 0 + 372 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27806229504 + 1774224 = 166752^2 + 1332^2 .

It is not an unprimeable number, because it can be changed into a prime (27808003721) 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 9 ways as a sum of consecutive naturals, for example, 10727101 + ... + 10729692.

Almost surely, 2^27808003728 is an apocalyptic number.

It is an amenable number.

27808003728 is an abundant number, since it is smaller than the sum of its proper divisors (52676430566).

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

27808003728 is a wasteful number, since it uses less digits than its factorization.

27808003728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21456813 (or 21456798 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 27808003728 in words is "twenty-seven billion, eight hundred eight million, three thousand, seven hundred twenty-eight".