2276
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 3990
- Proper Divisor Sum (Aliquot Sum)
- 1714
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1136
- Möbius Function
- 0
- Radical
- 1138
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 2
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
- 58
- 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
- A Fielder sequence.at n=12A001642
- a(n) = (n + 3)*(n^2 + 6*n + 2)/6.at n=21A005286
- Number of n-step self-avoiding walks on hexagonal lattice from (0,0) to (1,3).at n=4A005552
- Sum of the first n primes.at n=35A007504
- Coordination sequence T2 for Zeolite Code APC.at n=33A008033
- If a, b in sequence, so is ab+4.at n=38A009303
- Coordination sequence for MgCu2, Cu position.at n=12A009930
- Composite n such that phi(n) * sigma(n) is one less than a square.at n=23A015709
- Composite and even n such that phi(n) * sigma(n) is one less than a square.at n=15A015721
- Phi(n) + 5 | sigma(n + 5).at n=28A015784
- Numbers k such that the continued fraction for sqrt(k) has period 42.at n=17A020381
- a(n)-th nonsquarefree is sum of first k nonsquarefrees for some k.at n=29A020644
- a(n) = sum of the numbers between the two n's in A026366.at n=24A026369
- Number of distinct products ijk with 0 <= i < j < k <= n.at n=34A027429
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 18 ones.at n=40A031786
- Number of compositions (ordered partitions) of n into distinct odd parts.at n=40A032021
- Numbers whose set of base-8 digits is {3,4}.at n=25A032832
- First occurrence of n as a term in the continued fraction for zeta(3).at n=30A033165
- Convolution of natural numbers n >= 1 with Lucas numbers L(k) for k >= -4.at n=16A033817
- Fractional part of square root of a(n) starts with 7: first term of runs.at n=45A034113