Base | Representation |
---|---|
bin | 1001100011101… |
… | …11010000111101 |
3 | 12120212120200012 |
4 | 10301313100331 |
5 | 131011232120 |
6 | 11542313005 |
7 | 1662343523 |
oct | 461672075 |
9 | 176776605 |
10 | 80180285 |
11 | 412946a9 |
12 | 22a28765 |
13 | 137c4473 |
14 | a912313 |
15 | 708c1c5 |
hex | 4c7743d |
80180285 has 16 divisors (see below), whose sum is σ = 101861760. Its totient is φ = 60419520.
The previous prime is 80180281. The next prime is 80180293. The reversal of 80180285 is 58208108.
It is not a de Polignac number, because 80180285 - 22 = 80180281 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80180281) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14864 + ... + 19526.
It is an arithmetic number, because the mean of its divisors is an integer number (6366360).
Almost surely, 280180285 is an apocalyptic number.
It is an amenable number.
80180285 is a deficient number, since it is larger than the sum of its proper divisors (21681475).
80180285 is a wasteful number, since it uses less digits than its factorization.
80180285 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4868.
The product of its (nonzero) digits is 5120, while the sum is 32.
The square root of 80180285 is about 8954.3444762864. The cubic root of 80180285 is about 431.2103720500.
The spelling of 80180285 in words is "eighty million, one hundred eighty thousand, two hundred eighty-five".
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