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13656841 = 1111310987
BaseRepresentation
bin110100000110…
…001100001001
3221200211122221
4310012030021
511444004331
61204414041
7224036602
oct64061411
927624587
1013656841
117788650
1246a7321
132aa2193
141b56da9
1512eb711
hexd06309

13656841 has 8 divisors (see below), whose sum is σ = 15031584. Its totient is φ = 12304320.

The previous prime is 13656827. The next prime is 13656847. The reversal of 13656841 is 14865631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13656841 - 221 = 11559689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13656797 and 13656806.

It is not an unprimeable number, because it can be changed into a prime (13656847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4251 + ... + 6736.

It is an arithmetic number, because the mean of its divisors is an integer number (1878948).

Almost surely, 213656841 is an apocalyptic number.

13656841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13656841 is a deficient number, since it is larger than the sum of its proper divisors (1374743).

13656841 is a wasteful number, since it uses less digits than its factorization.

With its successor (13656842) it forms an eRAP, since the sums of their prime factors are consecutive (11111 and 11112).

13656841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111.

The product of its digits is 17280, while the sum is 34.

The square root of 13656841 is about 3695.5163374013. The cubic root of 13656841 is about 239.0287192019.

The spelling of 13656841 in words is "thirteen million, six hundred fifty-six thousand, eight hundred forty-one".

Divisors: 1 11 113 1243 10987 120857 1241531 13656841