11660
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 27216
- Proper Divisor Sum (Aliquot Sum)
- 15556
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4160
- Möbius Function
- 0
- Radical
- 5830
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 4
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
- 37
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Positive numbers k such that k and 5*k are anagrams in base 8 (written in base 8).at n=7A023076
- Second pentagonal numbers with even index: a(n) = n*(6*n+1).at n=44A049453
- a(n) = n^3 - n^2 + n - 1 = (n-1) * (n^2 + 1).at n=23A062158
- Expansion of (x+2) / ((x+1)*(x^2-3*x+1)).at n=9A102714
- a(n) = (2^(semiprime(n)-1)) modulo (semiprime(n)^2).at n=44A115948
- Number of rooted n-edge one-vertex maps on a non-orientable genus-4 surface (dually: one-face maps).at n=2A118449
- n! in base 8.at n=7A127115
- a(n) = 16*n^2 - 4.at n=26A158443
- Long legs of primitive Pythagorean triples (a,b,c) for which 2a+1, 2b+1 and 2c+1 are primes.at n=29A165237
- Second accumulation array, T, of the natural number array A000027, by antidiagonals.at n=94A185507
- Number of line graphs on [1,...,n].at n=6A192516
- Sum of distinct residues of all factorials mod prime(n).at n=43A210185
- Number of rooted maps with n vertices and 2 faces on a non-orientable surface of type 2.at n=1A214804
- Triangle read by rows: T(n,k) = number of rooted maps with n vertices and k faces on a non-orientable surface of type 2 (0 <= k <= n).at n=4A214806
- Indices of primes in the tribonacci-like sequence A214826.at n=9A242315
- Triangle read by rows: T(n, k) = C(n, k)*C(2*k, k)/(k+1) - sum(j = 0..k, (-1)^j*(1-j)^n*C(k, j)/k!), 0<=k<=n.at n=70A247493
- Molien series for invariants of finite Coxeter group D_10 (bisected).at n=35A266773
- Expansion of Product_{k>=1} (1 + x^(k^2))^2/(1 - x^(k^2))^2.at n=28A279227
- a(n) = n*(2*n - 3 - (-1)^n)*(11*n + (-1)^n)/24.at n=23A308026
- Number of separable partitions of n in which the number of distinct (repeatable) parts is 5.at n=39A325649