3678
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 7368
- Proper Divisor Sum (Aliquot Sum)
- 3690
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 1224
- Möbius Function
- -1
- Radical
- 3678
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 162
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Cubes written in base 9.at n=13A004639
- Coordination sequence T7 for Zeolite Code MTT.at n=37A008195
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MTW = ZSM-12 Nan[AlnSi28-nO56] starting with a T5 atom.at n=11A019195
- Number of balls in pyramid with base either a regular hexagon or a hexagon with alternate sides differing by 1 (balls in hexagonal pyramid of height n taken from hexagonal close-packing).at n=24A019298
- Number of "bifix-free" words of length n over a three-letter alphabet.at n=8A019308
- Coordination sequence T5 for Zeolite Code CGF.at n=42A019455
- Least non-partition into positive n-th powers.at n=8A027609
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 40.at n=16A031538
- Expansion of (x^3+2*x+1) / ((x-1)^4*(x^2+x+1)^2).at n=34A038391
- Number of ternary words of length n (beginning with 0) with autocorrelation function 2^(n-1).at n=8A045694
- Internal digits of n^2 include digits of n, n does not end in 0.at n=40A046833
- Coordination sequence T3 for Zeolite Code MSO.at n=42A047965
- Starting positions of strings of 2 9's in the decimal expansion of Pi.at n=40A050272
- Numbers n such that n^2 contains exactly 8 different digits.at n=5A054036
- Consider all integer triples (i,j,k), j,k>0, with i^3=j^3+binomial(k+2,3), ordered by increasing i; sequence gives i values.at n=13A054234
- Smallest "inconsummate number" in base n greater than in the previous base.at n=47A061381
- Football tournament numbers: the number of possible point series for a tournament of n teams playing each other once where 3 points are awarded to the winning team and 1 to each in the case of a tie.at n=5A064626
- Coordination sequence for ReO_3 net with respect to Re atom.at n=35A066714
- Number of ways to partition 2*n into distinct positive integers not greater than n.at n=26A079122
- Left truncatable 3-almost primes, in which repeatedly deleting the leftmost digit gives a 3-almost prime at every step until a single-digit 3-almost prime remains.at n=31A085248