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18080414 = 21179101103
BaseRepresentation
bin100010011111…
…0001010011110
31021000120122222
41010332022132
514112033124
61443305342
7306452402
oct104761236
937016588
1018080414
11a22a0a0
12607b252
133990791
142589102
1518c225e
hex113e29e

18080414 has 32 divisors (see below), whose sum is σ = 30551040. Its totient is φ = 7956000.

The previous prime is 18080407. The next prime is 18080417. The reversal of 18080414 is 41408081.

It is a super-2 number, since 2×180804142 = 653802740822792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080417) 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 15 ways as a sum of consecutive naturals, for example, 175487 + ... + 175589.

It is an arithmetic number, because the mean of its divisors is an integer number (954720).

Almost surely, 218080414 is an apocalyptic number.

18080414 is a deficient number, since it is larger than the sum of its proper divisors (12470626).

18080414 is a wasteful number, since it uses less digits than its factorization.

18080414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18080414 is about 4252.1070071201. The cubic root of 18080414 is about 262.4638269127.

Adding to 18080414 its reverse (41408081), we get a palindrome (59488495).

The spelling of 18080414 in words is "eighteen million, eighty thousand, four hundred fourteen".

Divisors: 1 2 11 22 79 101 103 158 202 206 869 1111 1133 1738 2222 2266 7979 8137 10403 15958 16274 20806 87769 89507 114433 175538 179014 228866 821837 1643674 9040207 18080414