28608861996 has 432 divisors, whose sum is σ = 90658247680. Its totient is φ = 7544275200.

The previous prime is 28608861979. The next prime is 28608862013. The reversal of 28608861996 is 69916880682.

28608861996 is a `hidden beast` number, since 2 + 8 + 6 + 0 + 8 + 8 + 619 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (28608861979) and next prime (28608862013).

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 75484935 + ... + 75485313.

Almost surely, 2^28608861996 is an apocalyptic number.

28608861996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28608861996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45329123840).

28608861996 is an abundant number, since it is smaller than the sum of its proper divisors (62049385684).

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

28608861996 is a wasteful number, since it uses less digits than its factorization.

28608861996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 28608861996 in words is "twenty-eight billion, six hundred eight million, eight hundred sixty-one thousand, nine hundred ninety-six".