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13674681 = 3217139643
BaseRepresentation
bin110100001010…
…100010111001
3221201202010200
4310022202321
512000042211
61205032413
7224142606
oct64124271
927652120
1013674681
11779aa99
1246b5709
132aaa337
141b5d6ad
151301b56
hexd0a8b9

13674681 has 24 divisors (see below), whose sum is σ = 21097440. Its totient is φ = 8505216.

The previous prime is 13674679. The next prime is 13674691. The reversal of 13674681 is 18647631.

It is not a de Polignac number, because 13674681 - 21 = 13674679 is a prime.

It is a super-2 number, since 2×136746812 = 373993800903522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13674601) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 20946 + ... + 21588.

It is an arithmetic number, because the mean of its divisors is an integer number (879060).

Almost surely, 213674681 is an apocalyptic number.

It is an amenable number.

13674681 is a deficient number, since it is larger than the sum of its proper divisors (7422759).

13674681 is a wasteful number, since it uses less digits than its factorization.

13674681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 802 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 13674681 is about 3697.9292854245. The cubic root of 13674681 is about 239.1327553863.

The spelling of 13674681 in words is "thirteen million, six hundred seventy-four thousand, six hundred eighty-one".

Divisors: 1 3 9 17 51 139 153 417 643 1251 1929 2363 5787 7089 10931 21267 32793 89377 98379 268131 804393 1519409 4558227 13674681