4624
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 15
- Divisor Sum
- 9517
- Proper Divisor Sum (Aliquot Sum)
- 4893
- 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
- 2176
- Möbius Function
- 0
- Radical
- 34
- Omega Function (Ω)
- 6
- 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
- yes
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 33
- 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
- yes
- Achilles Number
- no
- Perfect Power
- yes
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Number of series-parallel networks with n unlabeled edges. Also called yoke-chains by Cayley and MacMahon.at n=9A000084
- Numbers k such that 10*3^k - 1 is prime.at n=36A005542
- Expansion of (1+x^2) / ( (1-x)^2 * (1-x^3)^2 ).at n=47A006501
- a(n) = (n^3 + 2*n)/3.at n=24A006527
- Coordination sequence T5 for Zeolite Code EUO.at n=42A008100
- Coordination sequence T8 for Zeolite Code MFS.at n=42A008180
- Coordination sequence for diamond.at n=43A008253
- Coordination sequence T2 for Milarite.at n=42A008257
- Coordination sequence for CaF2(2), F position.at n=43A009925
- Numbers n such that tau(sigma(n))= tau(tau(n)).at n=23A015730
- Indices of prime Mersenne numbers (A001348).at n=26A016027
- Even squares: a(n) = (2*n)^2.at n=34A016742
- a(n) = (3n+2)^2.at n=23A016790
- a(n) = (4*n)^2.at n=17A016802
- a(n) = (5*n + 3)^2.at n=13A016886
- a(n) = (6*n + 2)^2.at n=11A016934
- a(n) = (7*n + 5)^2.at n=9A017042
- a(n) = (8*n + 4)^2.at n=8A017114
- a(n) = (9*n + 5)^2.at n=7A017222
- a(n) = (10*n + 8)^2.at n=6A017366