1316
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 2688
- Proper Divisor Sum (Aliquot Sum)
- 1372
- 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
- 552
- Möbius Function
- 0
- Radical
- 658
- Omega Function (Ω)
- 4
- 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
- 52
- 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
- Number of rooted trees with n nodes, 2 of which are labeled.at n=5A000524
- Fibonacci numbers written in base 9.at n=16A004692
- a(n) = ceiling(n*phi^8), where phi is the golden ratio, A001622.at n=28A004963
- Coordination sequence T1 for Zeolite Code ATT.at n=26A008041
- Coordination sequence T2 for Zeolite Code MFI.at n=23A008165
- Coordination sequence T1 for Zeolite Code MTW.at n=24A008196
- Triangle read by rows: T(n,k) is the number of partially labeled rooted trees with n vertices, k of which are labeled, 0 <= k <= n.at n=30A008295
- Molien series for A_6.at n=30A008629
- If a, b in sequence, so is ab+4.at n=25A009303
- Coordination sequence T2 for Zeolite Code VET.at n=22A009903
- Numbers k such that phi(k) | sigma_11(k).at n=46A015769
- Positive integers n such that 2^n == 2^5 (mod n).at n=44A015925
- Expansion of 1/(1-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17).at n=61A017893
- Powers of fifth root of 13 rounded up.at n=14A018152
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MEL = ZSM-11 Nan[AlnSi96-nO192] starting with a T2 atom.at n=10A019152
- Least k such that A020951(k) = n.at n=40A020953
- a(n) = T(n, n-4), T given by A026519. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 4.at n=7A026524
- a(n) = T(n, n-4), T given by A026552. Also a(n) = number of integer strings s(0),...,s(n) counted by T, such that s(n)=4.at n=7A026557
- Sequence satisfies T^2(a)=a, where T is defined below.at n=46A027584
- Positions of records in A030707.at n=34A030712