Base | Representation |
---|---|
bin | 11010011001000001… |
… | …011010010011000000 |
3 | 2201010212020012111221 |
4 | 122121001122103000 |
5 | 431013243301210 |
6 | 21003510044424 |
7 | 2022135161656 |
oct | 323101322300 |
9 | 81125205457 |
10 | 28337087680 |
11 | 11021602430 |
12 | 55aa049714 |
13 | 2897a02905 |
14 | 152b658dd6 |
15 | b0cb4e1da |
hex | 69905a4c0 |
28337087680 has 168 divisors, whose sum is σ = 75466986480. Its totient is φ = 10050969600.
The previous prime is 28337087671. The next prime is 28337087699. The reversal of 28337087680 is 8678073382.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5914726 + ... + 5919514.
Almost surely, 228337087680 is an apocalyptic number.
28337087680 is a gapful number since it is divisible by the number (20) 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 28337087680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37733493240).
28337087680 is an abundant number, since it is smaller than the sum of its proper divisors (47129898800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28337087680 is a wasteful number, since it uses less digits than its factorization.
28337087680 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4899 (or 4848 counting only the distinct ones).
The product of its (nonzero) digits is 2709504, while the sum is 52.
The spelling of 28337087680 in words is "twenty-eight billion, three hundred thirty-seven million, eighty-seven thousand, six hundred eighty".
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