Base | Representation |
---|---|
bin | 11010000111111010… |
… | …100100101111110000 |
3 | 2200101212011211211120 |
4 | 122013322210233300 |
5 | 424421310122200 |
6 | 20515214342240 |
7 | 2012051525025 |
oct | 320772445760 |
9 | 80355154746 |
10 | 28050082800 |
11 | 109945a4413 |
12 | 5529aba980 |
13 | 2850404a3c |
14 | 15014a954c |
15 | ae285a9a0 |
hex | 687ea4bf0 |
28050082800 has 60 divisors (see below), whose sum is σ = 89853769080. Its totient is φ = 7480021760.
The previous prime is 28050082799. The next prime is 28050082813. The reversal of 28050082800 is 828005082.
It is a tau number, because it is divible by the number of its divisors (60).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11686335 + ... + 11688734.
It is an arithmetic number, because the mean of its divisors is an integer number (1497562818).
Almost surely, 228050082800 is an apocalyptic number.
28050082800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
28050082800 is an abundant number, since it is smaller than the sum of its proper divisors (61803686280).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28050082800 is a wasteful number, since it uses less digits than its factorization.
28050082800 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23375090 (or 23375079 counting only the distinct ones).
The product of its (nonzero) digits is 10240, while the sum is 33.
Adding to 28050082800 its reverse (828005082), we get a palindrome (28878087882).
The spelling of 28050082800 in words is "twenty-eight billion, fifty million, eighty-two thousand, eight hundred".
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