28893909648 has 160 divisors (see below), whose sum is σ = 82094031360. Its totient is φ = 8716288000.

The previous prime is 28893909617. The next prime is 28893909701. The reversal of 28893909648 is 84690939882.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6079273 + ... + 6084023.

It is an arithmetic number, because the mean of its divisors is an integer number (513087696).

Almost surely, 2^28893909648 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 28893909648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41047015680).

28893909648 is an abundant number, since it is smaller than the sum of its proper divisors (53200121712).

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

28893909648 is a wasteful number, since it uses less digits than its factorization.

28893909648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065 (or 5059 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 66.

The spelling of 28893909648 in words is "twenty-eight billion, eight hundred ninety-three million, nine hundred nine thousand, six hundred forty-eight".