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18668676 = 22313119671
BaseRepresentation
bin100011100110…
…1110010000100
31022010110121110
41013031302010
514234344201
61504045020
7314452425
oct107156204
938113543
1018668676
11a5a1064
126303770
133b38470
14269d64c
15198b6d6
hex11cdc84

18668676 has 24 divisors (see below), whose sum is σ = 46911424. Its totient is φ = 5744160.

The previous prime is 18668641. The next prime is 18668687. The reversal of 18668676 is 67686681.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59680 + ... + 59991.

Almost surely, 218668676 is an apocalyptic number.

It is an amenable number.

18668676 is an abundant number, since it is smaller than the sum of its proper divisors (28242748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18668676 is a wasteful number, since it uses less digits than its factorization.

18668676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119691 (or 119689 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 18668676 is about 4320.7263278296. The cubic root of 18668676 is about 265.2799983424.

The spelling of 18668676 in words is "eighteen million, six hundred sixty-eight thousand, six hundred seventy-six".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 119671 239342 359013 478684 718026 1436052 1555723 3111446 4667169 6222892 9334338 18668676