28050605856 has 576 divisors, whose sum is σ = 104019552000. Its totient is φ = 7388817408.

The previous prime is 28050605851. The next prime is 28050605867. The reversal of 28050605856 is 65850605082.

28050605856 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 0 + 60 + 585 + 6 = 666.

It is a super-2 number, since 2×28050605856² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28050605851) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 34672780 + ... + 34673588.

It is an arithmetic number, because the mean of its divisors is an integer number (180589500).

Almost surely, 2^28050605856 is an apocalyptic number.

28050605856 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 28050605856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52009776000).

28050605856 is an abundant number, since it is smaller than the sum of its proper divisors (75968946144).

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

28050605856 is an equidigital number, since it uses as much as digits as its factorization.

28050605856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 28050605856 in words is "twenty-eight billion, fifty million, six hundred five thousand, eight hundred fifty-six".