1914
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 4320
- Proper Divisor Sum (Aliquot Sum)
- 2406
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 560
- Möbius Function
- 1
- Radical
- 1914
- Omega Function (Ω)
- 4
- 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
- 55
- 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
- Number of bipartite partitions of n white objects and 3 black ones.at n=12A000412
- Coordination sequence T2 for Zeolite Code AFT.at n=33A008027
- Coordination sequence T1 for Zeolite Code APD.at n=29A008034
- Coordination sequence T4 for Zeolite Code BOG.at n=31A008052
- Coordination sequence T1 for Zeolite Code EMT.at n=36A008086
- Coordination sequence T2 for Zeolite Code NES.at n=28A008206
- Number of partitions of n into parts >= 4.at n=47A008484
- Coordination sequence T3 for Zeolite Code -CHI.at n=28A009848
- a(n) = n^2 - floor( n/2 ).at n=44A014848
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Fibonacci numbers), t = (composite numbers).at n=17A025081
- Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026648.at n=15A026658
- Number of partitions of n in which the least part is 4.at n=50A026797
- Number of 4-unbalanced strings of length n (=2^n-A027559(n)).at n=12A027561
- Distinct numbers in the (2,3)-Pascal triangle A029600.at n=57A029601
- Even numbers in the (2,3)-Pascal triangle A029600.at n=41A029605
- Even numbers in the (2,3)-Pascal triangle A029600 that are different from 2.at n=29A029607
- Numbers to the left of the central numbers of the (2,3)-Pascal triangle A029600.at n=41A029610
- Numbers to the left of the central elements of the (2,3)-Pascal triangle A029600 that are different from 2.at n=29A029611
- Even numbers (not equal to 2) to the left of the central elements of the (2,3)-Pascal triangle A029600.at n=10A029613
- Distinct numbers in (3,2)-Pascal triangle A029618.at n=58A029619