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18383132 = 2218232521
BaseRepresentation
bin100011000100…
…0000100011100
31021120221220202
41012020010130
514201230012
61454003032
7312153065
oct106100434
937527822
1018383132
11a416579
1261a6478
133a684c1
14262756c
151931cc2
hex118811c

18383132 has 12 divisors (see below), whose sum is σ = 32200896. Its totient is φ = 9182880.

The previous prime is 18383119. The next prime is 18383201. The reversal of 18383132 is 23138381.

It is a junction number, because it is equal to n+sod(n) for n = 18383095 and 18383104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6032 + ... + 8552.

It is an arithmetic number, because the mean of its divisors is an integer number (2683408).

Almost surely, 218383132 is an apocalyptic number.

It is an amenable number.

18383132 is a deficient number, since it is larger than the sum of its proper divisors (13817764).

18383132 is a wasteful number, since it uses less digits than its factorization.

18383132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348 (or 4346 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 18383132 is about 4287.5554806906. Note that the first 3 decimals coincide. The cubic root of 18383132 is about 263.9205262768.

The spelling of 18383132 in words is "eighteen million, three hundred eighty-three thousand, one hundred thirty-two".

Divisors: 1 2 4 1823 2521 3646 5042 7292 10084 4595783 9191566 18383132