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18669014 = 2713671531
BaseRepresentation
bin100011100110…
…1110111010110
31022010111001222
41013031313112
514234402024
61504050342
7314453420
oct107156726
938114058
1018669014
11a5a1341
1263039b2
133b38670
14269d810
15198b85e
hex11cddd6

18669014 has 32 divisors (see below), whose sum is σ = 35003136. Its totient is φ = 7270560.

The previous prime is 18668959. The next prime is 18669017. The reversal of 18669014 is 41096681.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18669017) 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, 11429 + ... + 12959.

It is an arithmetic number, because the mean of its divisors is an integer number (1093848).

Almost surely, 218669014 is an apocalyptic number.

18669014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18669014 is a deficient number, since it is larger than the sum of its proper divisors (16334122).

18669014 is a wasteful number, since it uses less digits than its factorization.

18669014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18669014 is about 4320.7654414467. The cubic root of 18669014 is about 265.2815993147.

The spelling of 18669014 in words is "eighteen million, six hundred sixty-nine thousand, fourteen".

Divisors: 1 2 7 13 14 26 67 91 134 182 469 871 938 1531 1742 3062 6097 10717 12194 19903 21434 39806 102577 139321 205154 278642 718039 1333501 1436078 2667002 9334507 18669014