28921716096 has 640 divisors, whose sum is σ = 102395596800. Its totient is φ = 7169347584.

The previous prime is 28921716079. The next prime is 28921716127. The reversal of 28921716096 is 69061712982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 227729985 + ... + 227730111.

It is an arithmetic number, because the mean of its divisors is an integer number (159993120).

Almost surely, 2^28921716096 is an apocalyptic number.

28921716096 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 28921716096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51197798400).

28921716096 is an abundant number, since it is smaller than the sum of its proper divisors (73473880704).

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

28921716096 is a wasteful number, since it uses less digits than its factorization.

28921716096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 28921716096 in words is "twenty-eight billion, nine hundred twenty-one million, seven hundred sixteen thousand, ninety-six".