28910326896 has 200 divisors, whose sum is σ = 94430674800. Its totient is φ = 8458490880.

The previous prime is 28910326889. The next prime is 28910326909. The reversal of 28910326896 is 69862301982.

28910326896 is a `hidden beast` number, since 289 + 10 + 3 + 268 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 378460 + ... + 448388.

It is an arithmetic number, because the mean of its divisors is an integer number (472153374).

Almost surely, 2^28910326896 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 28910326896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47215337400).

28910326896 is an abundant number, since it is smaller than the sum of its proper divisors (65520347904).

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

28910326896 is a wasteful number, since it uses less digits than its factorization.

28910326896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69989 (or 69974 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 28910326896 in words is "twenty-eight billion, nine hundred ten million, three hundred twenty-six thousand, eight hundred ninety-six".