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18006107 = 773167211
BaseRepresentation
bin100010010110…
…0000001011011
31020212210201212
41010230001123
514102143412
61441533335
7306022640
oct104540133
936783655
1018006107
11a189289
12604424b
133965a02
142569dc7
1518aa222
hex112c05b

18006107 has 16 divisors (see below), whose sum is σ = 21084672. Its totient is φ = 15059520.

The previous prime is 18006073. The next prime is 18006113. The reversal of 18006107 is 70160081.

It is not a de Polignac number, because 18006107 - 220 = 16957531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18006127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85232 + ... + 85442.

It is an arithmetic number, because the mean of its divisors is an integer number (1317792).

Almost surely, 218006107 is an apocalyptic number.

18006107 is a deficient number, since it is larger than the sum of its proper divisors (3078565).

18006107 is a wasteful number, since it uses less digits than its factorization.

18006107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 18006107 is about 4243.3603429358. The cubic root of 18006107 is about 262.1037747135.

Adding to 18006107 its reverse (70160081), we get a palindrome (88166188).

The spelling of 18006107 in words is "eighteen million, six thousand, one hundred seven".

Divisors: 1 7 73 167 211 511 1169 1477 12191 15403 35237 85337 107821 246659 2572301 18006107