Base | Representation |
---|---|
bin | 10101011110000… |
… | …10001110000010 |
3 | 110112220010112010 |
4 | 22233002032002 |
5 | 332101231033 |
6 | 25512113350 |
7 | 4314561525 |
oct | 1257021602 |
9 | 415803463 |
10 | 180102018 |
11 | 92732348 |
12 | 50395856 |
13 | 2b40b455 |
14 | 19cc2bbc |
15 | 10c28863 |
hex | abc2382 |
180102018 has 8 divisors (see below), whose sum is σ = 360204048. Its totient is φ = 60034004.
The previous prime is 180101959. The next prime is 180102019. The reversal of 180102018 is 810201081.
It is a sphenic number, since it is the product of 3 distinct primes.
180102018 is an admirable number.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 180101985 and 180102003.
It is not an unprimeable number, because it can be changed into a prime (180102019) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15008496 + ... + 15008507.
It is an arithmetic number, because the mean of its divisors is an integer number (45025506).
Almost surely, 2180102018 is an apocalyptic number.
180102018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
180102018 is a wasteful number, since it uses less digits than its factorization.
180102018 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 30017008.
The product of its (nonzero) digits is 128, while the sum is 21.
The square root of 180102018 is about 13420.2093128237. The cubic root of 180102018 is about 564.7282667534.
Adding to 180102018 its reverse (810201081), we get a palindrome (990303099).
The spelling of 180102018 in words is "one hundred eighty million, one hundred two thousand, eighteen".
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