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18092007 = 3223711231
BaseRepresentation
bin100010100000…
…0111111100111
31021001011120100
41011000333213
514112421012
61443435143
7306531243
oct105007747
937034510
1018092007
11a23787a
126085ab3
133995b3b
14258d423
1518c58dc
hex1140fe7

18092007 has 24 divisors (see below), whose sum is σ = 27675648. Its totient is φ = 11365200.

The previous prime is 18091993. The next prime is 18092023. The reversal of 18092007 is 70029081.

It is not a de Polignac number, because 18092007 - 24 = 18091991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18092057) 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 23 ways as a sum of consecutive naturals, for example, 14082 + ... + 15312.

It is an arithmetic number, because the mean of its divisors is an integer number (1153152).

Almost surely, 218092007 is an apocalyptic number.

18092007 is a deficient number, since it is larger than the sum of its proper divisors (9583641).

18092007 is a wasteful number, since it uses less digits than its factorization.

18092007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 18092007 is about 4253.4699951922. The cubic root of 18092007 is about 262.5199114148.

The spelling of 18092007 in words is "eighteen million, ninety-two thousand, seven".

Divisors: 1 3 9 23 69 71 207 213 639 1231 1633 3693 4899 11079 14697 28313 84939 87401 254817 262203 786609 2010223 6030669 18092007