Base | Representation |
---|---|
bin | 100010011100… |
… | …1101100000000 |
3 | 1020222122111221 |
4 | 1010321230000 |
5 | 14110441310 |
6 | 1443044424 |
7 | 306345061 |
oct | 104715400 |
9 | 36878457 |
10 | 18062080 |
11 | a217343 |
12 | 6070714 |
13 | 398532a |
14 | 2582568 |
15 | 18bbada |
hex | 1139b00 |
18062080 has 72 divisors (see below), whose sum is σ = 44003232. Its totient is φ = 7102464.
The previous prime is 18062047. The next prime is 18062081. The reversal of 18062080 is 8026081.
It is a super-3 number, since 3×180620803 (a number of 23 digits) contains 333 as substring.
It is not an unprimeable number, because it can be changed into a prime (18062081) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131772 + ... + 131908.
It is an arithmetic number, because the mean of its divisors is an integer number (611156).
Almost surely, 218062080 is an apocalyptic number.
18062080 is a gapful number since it is divisible by the number (10) 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 18062080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22001616).
18062080 is an abundant number, since it is smaller than the sum of its proper divisors (25941152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18062080 is a wasteful number, since it uses less digits than its factorization.
18062080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 261 (or 247 counting only the distinct ones).
The product of its (nonzero) digits is 768, while the sum is 25.
The square root of 18062080 is about 4249.9505879481. The cubic root of 18062080 is about 262.3750819090.
The spelling of 18062080 in words is "eighteen million, sixty-two thousand, eighty".
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