| Base | Representation |
|---|---|
| bin | 1010100000011110… |
| … | …0001101100000000 |
| 3 | 21021120100112202000 |
| 4 | 2220013201230000 |
| 5 | 21234024422110 |
| 6 | 1143514024000 |
| 7 | 126616145040 |
| oct | 25007415400 |
| 9 | 7246315660 |
| 10 | 2820545280 |
| 11 | 1218140463 |
| 12 | 668718000 |
| 13 | 35c471907 |
| 14 | 1ca851720 |
| 15 | 1179471c0 |
| hex | a81e1b00 |
2820545280 has 576 divisors, whose sum is σ = 11655705600. Its totient is φ = 632586240.
The previous prime is 2820545279. The next prime is 2820545281. The reversal of 2820545280 is 825450282.
2820545280 is a `hidden beast` number, since 2 + 82 + 0 + 54 + 528 + 0 = 666.
It is an interprime number because it is at equal distance from previous prime (2820545279) and next prime (2820545281).
It is a tau number, because it is divible by the number of its divisors (576).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (2820545281) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21530815 + ... + 21530945.
It is an arithmetic number, because the mean of its divisors is an integer number (20235600).
Almost surely, 22820545280 is an apocalyptic number.
2820545280 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 2820545280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5827852800).
2820545280 is an abundant number, since it is smaller than the sum of its proper divisors (8835160320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2820545280 is a wasteful number, since it uses less digits than its factorization.
2820545280 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 257 (or 237 counting only the distinct ones).
The product of its (nonzero) digits is 51200, while the sum is 36.
The square root of 2820545280 is about 53108.8060494679. The cubic root of 2820545280 is about 1412.8986994692.
The spelling of 2820545280 in words is "two billion, eight hundred twenty million, five hundred forty-five thousand, two hundred eighty".
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