28056630249 has 12 divisors (see below), whose sum is σ = 40535040000. Its totient is φ = 18700360344.

The previous prime is 28056630241. The next prime is 28056630281. The reversal of 28056630249 is 94203665082.

28056630249 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 6 + 630 + 2 + 4 + 9 = 666.

It is not a de Polignac number, because 28056630249 - 2³ = 28056630241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28056630241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294249 + ... + 377750.

It is an arithmetic number, because the mean of its divisors is an integer number (3377920000).

Almost surely, 2^28056630249 is an apocalyptic number.

It is an amenable number.

28056630249 is a deficient number, since it is larger than the sum of its proper divisors (12478409751).

28056630249 is a wasteful number, since it uses less digits than its factorization.

28056630249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676644 (or 676641 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 28056630249 in words is "twenty-eight billion, fifty-six million, six hundred thirty thousand, two hundred forty-nine".