Base | Representation |
---|---|
bin | 100010011111… |
… | …1100010001110 |
3 | 1021000212100222 |
4 | 1010333202032 |
5 | 14112223110 |
6 | 1443351342 |
7 | 306504644 |
oct | 104774216 |
9 | 37025328 |
10 | 18086030 |
11 | a233336 |
12 | 6082552 |
13 | 39931c1 |
14 | 258b194 |
15 | 18c3c55 |
hex | 113f88e |
18086030 has 16 divisors (see below), whose sum is σ = 32727024. Its totient is φ = 7196160.
The previous prime is 18086021. The next prime is 18086039. The reversal of 18086030 is 3068081.
It is an interprime number because it is at equal distance from previous prime (18086021) and next prime (18086039).
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18086039) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 2756 + ... + 6615.
It is an arithmetic number, because the mean of its divisors is an integer number (2045439).
Almost surely, 218086030 is an apocalyptic number.
18086030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
18086030 is a deficient number, since it is larger than the sum of its proper divisors (14640994).
18086030 is a wasteful number, since it uses less digits than its factorization.
18086030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9571.
The product of its (nonzero) digits is 1152, while the sum is 26.
The square root of 18086030 is about 4252.7673343365. The cubic root of 18086030 is about 262.4909989355.
The spelling of 18086030 in words is "eighteen million, eighty-six thousand, thirty".
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