28618334208 has 560 divisors, whose sum is σ = 94200939360. Its totient is φ = 8620867584.

The previous prime is 28618334207. The next prime is 28618334209. The reversal of 28618334208 is 80243381682.

28618334208 is a `hidden beast` number, since 2 + 8 + 618 + 3 + 3 + 4 + 20 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (28618334207) and next prime (28618334209).

It is not an unprimeable number, because it can be changed into a prime (28618334203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 485056483 + ... + 485056541.

Almost surely, 2^28618334208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28618334208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47100469680).

28618334208 is an abundant number, since it is smaller than the sum of its proper divisors (65582605152).

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

28618334208 is an equidigital number, since it uses as much as digits as its factorization.

28618334208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 28618334208 in words is "twenty-eight billion, six hundred eighteen million, three hundred thirty-four thousand, two hundred eight".