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18086030 = 251939371
BaseRepresentation
bin100010011111…
…1100010001110
31021000212100222
41010333202032
514112223110
61443351342
7306504644
oct104774216
937025328
1018086030
11a233336
126082552
1339931c1
14258b194
1518c3c55
hex113f88e

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".

Divisors: 1 2 5 10 193 386 965 1930 9371 18742 46855 93710 1808603 3617206 9043015 18086030